Registration Dossier
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EC number: 231-545-4 | CAS number: 7631-86-9 This entry covers synthetic amorphous silicon dioxide as a nanomaterial in the form of stable aggregated particles of particle size > 1 μm, with primary particles of nanosize
Substance identity
Identification
- Display Name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Type of Substance
- Composition:
- mono-constituent substance
- Origin:
- inorganic
Substance Identifiers open all close all
I0250
(No other type specified)
The silica substance that we are registering is pyrogenic
(No other type specified)
Compositions
Boundary Composition(s) open all close all
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Snythetic amorphous silicon dioxide, nanostructured material_Set1
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silicon dioxide, nanostructured material, silanized_Set 2
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, Silanized SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silica, spheroidal nanostructured material
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Range of length:
- >= 1 - <= 100 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silicon dioxide (SAS), nanomaterial
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Fraction of constituent particles in the size range 1-100 nm:
- 100 - 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silicon dioxide (SAS), nanomaterial, silanized
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Fraction of constituent particles in the size range 1-100 nm:
- 100 - 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silicon dioxide, nanostructured material, silanized_Set 2
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, Silanized SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatments
- Surface treatment name:
- Silanized SAS
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- The surface treatment agents are alkoxy- or chlorosilanes, silazanes, and/or siloxanes and have been generally registered under REACH as relevant. The use as surface treatment agents is described in the REACH dossiers and exposure scenarios of specific alkoxysilanes, chlorosilanes, silazanes and/or siloxanes. The carbon content at the surface of SAS Silanized is less than 20 wt.-% typically less than 10 wt-%.
- Percentage of coverage of particle surface, %:
- > 0 - < 50
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silicon dioxide, nanostructured material, silanized
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatments
- Surface treatment name:
- SAS Silanized
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- The surface treatment agents are alkoxy- or chlorosilanes, silazanes, and/or siloxanes and have been generally registered under REACH as relevant. The use as surface treatment agents is described in the REACH dossiers and exposure scenarios of specific alkoxysilanes, chlorosilanes, silazanes and/or siloxanes. The carbon content at the surface of SAS Silanized is less than 20 wt.-% typically less than 10 wt-%.
- Percentage of coverage of particle surface, %:
- >= 30 - < 100
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Range of length:
- >= 1 - <= 100 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatments
- Surface treatment name:
- SAS Silanized
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- The surface treatment agents are alkoxy- or chlorosilanes, silazanes, and/or siloxanes and have been generally registered under REACH as relevant. The use as surface treatment agents is described in the REACH dossiers and exposure scenarios of specific alkoxysilanes, chlorosilanes, silazanes and/or siloxanes. The carbon content at the surface of SAS Silanized is less than 20 wt.-% typically less than 10 wt-%.
- Percentage of coverage of particle surface, %:
- >= 30 - < 100
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Range of length:
- >= 1 - <= 100 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Range of length:
- >= 1 - <= 100 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Legal Entity Composition(s) open all close all
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silicon dioxide, nanostructured material_Set 1
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 2 - <= 25 nm
- Percentile:
- D50
- Range:
- >= 2.56 - <= 50 nm
- Percentile:
- D90
- Range:
- >= 3.5 - <= 70 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 50 - <= 400 m²/g
- Range of volume specific surface area:
- >= 110 - <= 880 m²/cm³
- Skeletal density:
- ca. 2.2 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silicon dioxide, nanostructured material_Set 1
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 2 - <= 25 nm
- Percentile:
- D50
- Range:
- >= 2.5 - <= 50 nm
- Percentile:
- D90
- Range:
- >= 3.5 - <= 70 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 800 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 1 760 m²/cm³
- Skeletal density:
- ca. 2.2 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silicon dioxide, nanostructured material, silanized_Set 2
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 3.5 - <= 13 nm
- Percentile:
- D50
- Range:
- >= 5 - <= 16 nm
- Percentile:
- D90
- Range:
- >= 7 - <= 19 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 800 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 1 760 m²/cm³
- Skeletal density:
- ca. 2.2 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 99 - < 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 10 - < 40 nm
- Percentile:
- D50
- Range:
- > 15 - < 60 nm
- Percentile:
- D90
- Range:
- > 20 - < 80 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent part cles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal struc ture.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - < 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99 - <= 100 %
Specific surface area
- Range of specific surface area:
- > 600 - < 800 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
- Name of nanoform:
- Orisil 200 - hydrophilic fumed silica with surface area approximately 200
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 100 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- 7.7 nm
- Range:
- >= 2.7 - <= 12.7 nm
- Percentile:
- D50
- Typical value:
- 12.6 nm
- Range:
- >= 7.6 - <= 17.6 nm
- Percentile:
- D90
- Typical value:
- 20.2 nm
- Range:
- >= 15.2 - <= 25.2 nm
- Fraction of constituent particles in the size range 1-100 nm:
- >= 100 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
Specific surface area
- Typical specific surface area:
- 228 m²/g
- Range of specific surface area:
- >= 226 - <= 230 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
- Name of nanoform:
- Orisil M130 - hydrophobic fumed silica with surface area after treatment process - approximately 130
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 100 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- 11.4 nm
- Range:
- >= 2.4 - <= 20.4 nm
- Percentile:
- D50
- Typical value:
- 18.2 nm
- Range:
- >= 9.2 - <= 27.2 nm
- Percentile:
- D90
- Typical value:
- 31.9 nm
- Range:
- >= 22.9 - <= 30.9 nm
- Fraction of constituent particles in the size range 1-100 nm:
- >= 100 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
Specific surface area
- Typical specific surface area:
- 124 m²/g
- Range of specific surface area:
- >= 122 - <= 126 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
- Name of nanoform:
- Orisil SF125 - hydrophobic fumed silica with surface area after treatment process - approximately 125
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 100 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- 9.7 nm
- Range:
- >= 3.7 - <= 15.7 nm
- Percentile:
- D50
- Typical value:
- 15 nm
- Range:
- >= 9 - <= 21 nm
- Percentile:
- D90
- Typical value:
- 23.2 nm
- Range:
- >= 17.2 - <= 29.2 nm
- Fraction of constituent particles in the size range 1-100 nm:
- >= 100 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
Specific surface area
- Typical specific surface area:
- 140 m²/g
- Range of specific surface area:
- >= 138 - <= 142 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
- Name of nanoform:
- Synthetic amorphous silica, spheroidal nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Skeletal density:
- ca. 1.9 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Range of length:
- >= 1 - <= 100 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 800 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
Surface treatments
- Surface treatment name:
- hydrophilic
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of nanoform:
- WACKER Fumed SAS
- Name of set of nanoforms:
- Set 1
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Range of length:
- >= 1 - <= 100 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of nanoform:
- WACKER Precipitated SAS
- Name of set of nanoforms:
- Set 1
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Range of length:
- >= 1 - <= 100 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silicon dioxide (SAS), nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- 100 - 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The limit of quantifcation is 0.3 % corresponding to a limit of detection of 0.1 % quartz. The maximum quartz content is less than 0.1%.
Specific surface area
- Range of specific surface area:
- >= 10 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 6.8 - <= 2 250 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silicon dioxide (SAS), nanostructured material, silanized
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- 100 - 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 10 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 6.8 - <= 2 250 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- WACKER Silanized SAS
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatmentsopen allclose all
- Surface treatment name:
- SAS Silanized
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- The surface treatment agents are alkoxy- or chlorosilanes, silazanes, and/or siloxanes and have been generally registered under REACH as relevant. The use as surface treatment agents is described in the REACH dossiers and exposure scenarios of specific alkoxysilanes, chlorosilanes, silazanes and/or siloxanes. The carbon content at the surface of SAS Silanized is less than 20 wt.-% typically less than 10 wt-%.
- Percentage of coverage of particle surface, %:
- >= 30 - < 100
- Surface treatment name:
- CAS 75-78-5
Surface treatmentopen allclose all
- Order:
- #2
- Order:
- #3
- Order:
- #4
- Order:
- #5
- Order:
- #6
- Order:
- #7
- Order:
- #8
- Order:
- #9
- Order:
- #10
- Order:
- #11
- Order:
- #12
- External layer:
- hydrophobic
- Description:
- Reaction of SAS with dichloro(dimethyl)silane, CAS 75-78-5. Typical carbon content below 10%.
Examples H15 grade 0.8-1.2 % C; H18 grade 4.0-5.2 % C (highest carbon content). - Percentage of coverage of particle surface, %:
- >= 30 - < 100
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- WACKER Precipitated SAS
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- WACKER Fumed SAS
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D50
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
- Range of volume specific surface area:
- >= 8.8 - <= 2 200 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 8 - <= 90 nm
- Percentile:
- D50
- Range:
- >= 5 - <= 50 nm
- Percentile:
- D10
- Range:
- >= 2 - <= 30 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- SAS, nanostructured material
- Pure structure:
- yes
- Range:
- >= 99.9 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. T
he detection limit for crystallinity by X-ray is below the maximum order of 0.3% by weight.
Specific surface area
- Range of specific surface area:
- >= 80 - <= 800 m²/g
- Range of volume specific surface area:
- >= 200 - <= 1 500 m²/cm³
- Skeletal density:
- ca. 2.24 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material, ST
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 8 - <= 90 nm
- Percentile:
- D50
- Range:
- >= 5 - <= 50 nm
- Percentile:
- D10
- Range:
- >= 2 - <= 30 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- SAS, nanostructured material, ST
- Pure structure:
- yes
- Range:
- >= 99.9 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. T
he detection limit for crystallinity by X-ray is below the maximum order of 0.3% by weight.
Specific surface area
- Range of specific surface area:
- >= 80 - <= 800 m²/g
- Range of volume specific surface area:
- >= 200 - <= 1 500 m²/cm³
- Skeletal density:
- ca. 2.24 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatmentsopen allclose all
- Surface treatment name:
- SAS, nanostructured material, ST
sythetically-spherical-other/phenyl 1
Surface treatmentopen allclose all
- Order:
- #2
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophilic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups: Phenyl - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
sythetically-spherical-methacryl 1
Surface treatment
- Order:
- #1
- External layer:
- hydrophilic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophilic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Methacryl - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
sythetically-spherical-amino 1
Surface treatment
- Order:
- #1
- External layer:
- hydrophilic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophilic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Amino - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
sythetically-spherical-alkyl 1
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophobic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Alkyl - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
waterglass-spherical-alkyl 1b
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophobic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Alkyl - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
waterglass-spherical-alkyl 1a
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophobic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Alkyl - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
waterglass-irregular-amino 1
Surface treatment
- Order:
- #1
- External layer:
- hydrophilic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophilic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Amino - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
waterglass-irregular-alkyl 1b
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophobic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Alkyl - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- Surface treatment name:
- SAS, nanostructured material, ST
waterglass-irregular-alkyl 1a
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes hydrophobic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Alkyl - Percentage of coverage of particle surface, %:
- >= 90 - <= 100
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured colloidal material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 10 - <= 90 nm
- Percentile:
- D50
- Range:
- >= 8 - <= 60 nm
- Percentile:
- D10
- Range:
- >= 5 - <= 40 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- Colloidal silica
- Pure structure:
- yes
- Range:
- >= 99.9 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. T
he detection limit for crystallinity by X-ray is below the maximum order of 0.3% by weight.
Specific surface area
- Range of specific surface area:
- >= 30 - <= 200 m²/g
- Range of volume specific surface area:
- >= 80 - <= 600 m²/cm³
- Skeletal density:
- ca. 2.48 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured colloidal material, ST
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 10 - <= 90 nm
- Percentile:
- D50
- Range:
- >= 8 - <= 60 nm
- Percentile:
- D10
- Range:
- >= 5 - <= 40 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- Colloidal silica
- Pure structure:
- yes
- Range:
- >= 99.9 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. T
he detection limit for crystallinity by X-ray is below the maximum order of 0.3% by weight.
Specific surface area
- Range of specific surface area:
- >= 30 - <= 200 m²/g
- Range of volume specific surface area:
- >= 80 - <= 600 m²/cm³
- Skeletal density:
- ca. 2.48 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Surface treatments
- Surface treatment name:
- Klebosol, ST Alox
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- DESCRIBE THE PROCESS BEHIND THE SURFACE FUNCTIONALISATION / TREATMENT:
- Main features of the surface treatment/functionalisation process: product becomes cationic
- the type of process/reaction (hydrolysis, oxygen treatment, acid washing, etc.): Hydrolysis
- any purification step: no
- Functionalities introduced by the treatment (e.g. carboxyl, amino, hydroxyl groups): Al2O3 - Percentage of coverage of particle surface, %:
- > 90 - < 100
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
- Name of nanoform:
- amorphous_SiO2_untreated
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
- Remarks:
- aggregates and agglomerates of primary nano particles
Percentileopen allclose all
- Percentile:
- D90
- Typical value:
- ca. 13.3 μm
- Range:
- > 10 - < 15 μm
- Percentile:
- D50
- Typical value:
- ca. 8.23 μm
- Range:
- > 6 - < 10 μm
- Percentile:
- D10
- Typical value:
- ca. 5.13 μm
- Range:
- > 3 - < 6 μm
- Additional information:
- nanostructured material consisting of aggregates and agglomerates which are composed of fused primary particles. Even after ultrasonic treatment, aggregates were the constituent particle. There was no physical boundary between the fine features within aggregates. The aggregates were consisted with primary particles around 20nm (average aspect ratio 1.18). Free “primary particles” were not observed.
- Fraction of constituent particles in the size range 1-100 nm:
- ca. 0 - 0 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous silicon dioxide
- Pure structure:
- yes
- Typical composition:
- < 99.7 %
- Description:
- A crystalline structure of Silicon dioxide was not detected in the sample. The amount of crystalline Silicon dioxides was less than 0.3%.
Specific surface area
- Typical specific surface area:
- ca. 160.7 m²/g
- Range of specific surface area:
- > 159 - < 160.7 m²/g
- Skeletal density:
- > 2.18 - < 2.19 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
- Name of nanoform:
- Speroidal
Shape
Shape description
- Shape category:
- spheroidal
- Remarks:
- ND and Z1, primary particle shape: 100% spherical particles with regular shape.
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- ca. 100 %
- Range:
- ca. 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
- Remarks:
- ND and Z1
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- >= 1.2 nm
- Range:
- >= 0.5 - <= 10 nm
- Percentile:
- D50
- Typical value:
- >= 2.9 nm
- Range:
- >= 2 - <= 14 nm
- Percentile:
- D90
- Typical value:
- >= 11 nm
- Range:
- >= 5 - <= 40 nm
- Additional information:
- According to the TEM image and histogram, ND type Quartzene material’s particle dize varies between 1 to 20 nm where as the majority of the particles are below 10 nm in size.
As it can be seen from the TEM analysis, Z1 type Quartzene material’s particle size varies between 5 to 20 nm in the image and it should be mentioned that the analytical sample is an example of the Z1 particles on the TEM grid, different parts of the same gird may have different particles and the particle size can vary between 10 to 30 nm in size. - Fraction of constituent particles in the size range 1-100 nm:
- >= 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Typical composition:
- >= 99.7 %
- Range:
- >= 99.7 - <= 100 %
- Crystal system:
- not applicable
- Description:
- Z1 and ND is 100% amorphous (< 0,3 % crystalline parts). X-ray diffraction diagrams of ND/Z1 show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below. please see XRD-analysis for confirmation.
Specific surface area
- Typical specific surface area:
- >= 279 m²/g
- Range of specific surface area:
- >= 122 - <= 556 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
- Name of nanoform:
- Speroidal
Shape
Shape description
- Shape category:
- spheroidal
- Remarks:
- Z1 Primary particle shape: 100% spherical particles with regular shape
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- ca. 100 %
- Range:
- ca. 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
- Remarks:
- Z1
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- ca. 7.1 nm
- Range:
- >= 5 - <= 10 nm
- Percentile:
- D50
- Typical value:
- ca. 10.8 nm
- Range:
- >= 8 - <= 14 nm
- Percentile:
- D90
- Typical value:
- ca. 23 nm
- Range:
- >= 12 - <= 40 nm
- Additional information:
- According to the TEM image and histogram, ND type Quartzene material’s particle dize varies between 1 to 20 nm where as the majority of the particles are below 10 nm in size.
As it can be seen from the TEM analysis, Z1 type Quartzene material’s particle size varies between 5 to 20 nm in the image and it should be mentioned that the analytical sample is an example of the Z1 particles on the TEM grid, different parts of the same gird may have different particles and the particle size can vary between 10 to 30 nm in size. - Fraction of constituent particles in the size range 1-100 nm:
- >= 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Typical composition:
- >= 99.7 %
- Range:
- >= 99.7 - <= 100 %
- Description:
- Z1 and ND is 100% amorphous (< 0,3 % crystalline parts). X-ray diffraction diagrams of ND/Z1 show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below. please see XRD-analysis for confirmation.
Specific surface area
- Typical specific surface area:
- >= 390 m²/g
- Range of specific surface area:
- >= 122 - <= 556 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
Surface treatments
- Surface treatment name:
- Hydrophobization of silica whit Hexamethyldisilazane
Surface treatment
- Order:
- #1
- External layer:
- hydrophobic
- Description:
- Hydrophobization of silica whit Hexamethyldisilazane
- Percentage of coverage of particle surface, %:
- >= 30 - <= 100
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 5 - < 20 nm
- Percentile:
- D50
- Range:
- > 10 - < 30 nm
- Percentile:
- D90
- Range:
- > 15 - < 40 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - < 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99 - <= 100 %
Specific surface area
- Range of specific surface area:
- > 500 - < 700 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 4 - < 10 nm
- Percentile:
- D50
- Range:
- > 6 - < 20 nm
- Percentile:
- D90
- Range:
- 10 - < 50 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99 - <= 100 %
Specific surface area
- Range of specific surface area:
- > 250 - < 370 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 5 - < 15 nm
- Percentile:
- D50
- Range:
- > 7 - < 25 nm
- Percentile:
- D90
- Range:
- > 10 - < 35 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99 - <= 100 %
Specific surface area
- Range of specific surface area:
- > 310 - < 410 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 5 - < 15 nm
- Percentile:
- D50
- Range:
- > 7 - < 30 nm
- Percentile:
- D90
- Range:
- > 10 - < 40 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
Specific surface area
- Range of specific surface area:
- > 120 - < 250 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silicon dioxide, nanostructured material, silanized
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 98 - < 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 2 - < 15 nm
- Percentile:
- D50
- Range:
- > 4 - < 30 nm
- Percentile:
- D90
- Range:
- > 10 - < 45 nm
- Additional information:
- Synthetic amorphous silica exists as a nanostructured material consisting of aggregates and agglomerates which are composed of primary particles; the particle size from the DLS results is larger than the primary particles size.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - < 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 98 - < 100 %
Specific surface area
- Range of specific surface area:
- > 50 - < 500 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Range:
- > 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 2 - < 15 nm
- Percentile:
- D50
- Range:
- > 4 - < 35 nm
- Percentile:
- D90
- Range:
- > 8 - < 45 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - < 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99 - <= 100 %
Specific surface area
- Range of specific surface area:
- > 50 - < 500 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- synthetic amorphous silicon dioxide, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 95 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 5 - < 20 nm
- Percentile:
- D50
- Range:
- > 10 - < 35 nm
- Percentile:
- D90
- Range:
- > 13 - < 80 nm
- Additional information:
- The result of DLS is only used as an auxiliary reference and does not represent the true primary particle size. The data D10,D50 and D90 is base on the result of TEM and DLS.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 90 - < 100 %
Specific surface area
- Range of specific surface area:
- > 140 - < 200 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
- Name of set of nanoforms:
- Synthetic amorphous silica, nanostructured material
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- > 99 - < 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- > 15 - < 60 nm
- Percentile:
- D50
- Range:
- > 10 - < 30 nm
- Percentile:
- D10
- Range:
- > 8 - < 20 nm
- Additional information:
- The D10, D50 and D90 data is based on the result of TEM and DLS.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - < 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Range:
- > 99 - < 100 %
Specific surface area
- Range of specific surface area:
- > 120 - < 210 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 95 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D25
- Typical value:
- ca. 5.8 nm
- Range:
- >= 4.1 - <= 7.5 nm
- Percentile:
- D50
- Typical value:
- ca. 6.8 nm
- Range:
- >= 4.3 - <= 9.3 nm
- Percentile:
- D75
- Typical value:
- ca. 8.1 nm
- Range:
- >= 5.2 - <= 11 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Typical aspect ratio (:1):
- < 3 :1
- Fraction of constituent particles in the size range 1-100 nm:
- >= 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Typical composition:
- ca. 100 %
- Range:
- >= 99.7 - <= 100 %
Specific surface area
- Typical specific surface area:
- ca. 310 m²/g
- Range of specific surface area:
- >= 216.2 - <= 312.5 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 95 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- > 1 - < 100 nm
- Percentile:
- D25
- Typical value:
- ca. 7.2 nm
- Range:
- >= 5.5 - <= 9.5 nm
- Percentile:
- D50
- Typical value:
- ca. 8.4 nm
- Range:
- >= 5.8 - <= 11.9 nm
- Percentile:
- D75
- Typical value:
- ca. 9.9 nm
- Range:
- >= 7 - <= 14.1 nm
- Percentile:
- D90
- Range:
- > 1 - <= 100 nm
- Typical aspect ratio (:1):
- < 3 :1
- Fraction of constituent particles in the size range 1-100 nm:
- >= 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Typical composition:
- ca. 100 %
- Range:
- >= 99.7 - <= 100 %
Specific surface area
- Typical specific surface area:
- ca. 297 m²/g
- Range of specific surface area:
- >= 280.8 - <= 299.2 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 95 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - <= 100 nm
- Percentile:
- D25
- Typical value:
- ca. 3.5 nm
- Range:
- >= 1.9 - <= 5.3 nm
- Percentile:
- D50
- Typical value:
- ca. 4.3 nm
- Range:
- >= 1.8 - <= 7.3 nm
- Percentile:
- D75
- Typical value:
- ca. 5.2 nm
- Range:
- >= 2.3 - <= 8.9 nm
- Percentile:
- D90
- Range:
- >= 1 - < 100 nm
- Typical aspect ratio (:1):
- < 3 :1
- Fraction of constituent particles in the size range 1-100 nm:
- >= 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Typical composition:
- ca. 100 %
- Range:
- >= 99.7 - <= 100 %
Specific surface area
- Typical specific surface area:
- ca. 673 m²/g
- Range of specific surface area:
- >= 609.4 - <= 674.6 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 95 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- 1 - < 100 nm
- Percentile:
- D25
- Typical value:
- ca. 5.2 nm
- Range:
- >= 3.6 - <= 6.8 nm
- Percentile:
- D50
- Typical value:
- ca. 6.9 nm
- Range:
- >= 4.4 - <= 9.4 nm
- Percentile:
- D75
- Typical value:
- ca. 8.4 nm
- Range:
- >= 5.5 - <= 11.3 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Typical aspect ratio (:1):
- < 3 :1
- Fraction of constituent particles in the size range 1-100 nm:
- >= 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Typical composition:
- ca. 100 %
- Range:
- >= 99.7 - <= 100 %
Specific surface area
- Typical specific surface area:
- ca. 964 m²/g
- Range of specific surface area:
- >= 960.9 - <= 967.1 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- 100 %
- Range:
- >= 95 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Range:
- >= 1 - < 100 nm
- Percentile:
- D25
- Typical value:
- ca. 4.5 nm
- Range:
- >= 2.9 - <= 6.1 nm
- Percentile:
- D50
- Typical value:
- ca. 5.5 nm
- Range:
- >= 3 - <= 8 nm
- Percentile:
- D75
- Typical value:
- ca. 6.5 nm
- Range:
- >= 3.6 - <= 9.4 nm
- Percentile:
- D90
- Range:
- >= 1 - <= 100 nm
- Typical aspect ratio (:1):
- < 3 :1
- Fraction of constituent particles in the size range 1-100 nm:
- >= 99 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Typical composition:
- ca. 100 %
- Range:
- >= 99.7 - <= 100 %
Specific surface area
- Typical specific surface area:
- ca. 601 m²/g
- Range of specific surface area:
- >= 597.8 - <= 604.2 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silica, amorphous, pyrogenic, crystalline-free
- CAS Number:
- 112945-52-5
- Molecular formula:
- O2Si
- IUPAC Name:
- Silica, amorphous, pyrogenic, crystalline-free
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Typical composition:
- ca. 99.7 %
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- ca. 15 nm
- Range:
- >= 0 - <= 20 nm
- Percentile:
- D50
- Typical value:
- ca. 23 nm
- Range:
- >= 0 - <= 60 nm
- Percentile:
- D90
- Typical value:
- ca. 46 nm
- Range:
- >= 30 - <= 60 nm
- Typical length:
- ca. 23 nm
- Range of length:
- >= 1 - <= 100 nm
- Typical lateral dimension 1:
- ca. 23 nm
- Range of lateral dimension 1:
- >= 1 - <= 100 nm
- Typical lateral dimension 2:
- ca. 23 nm
- Range of lateral dimension 2:
- >= 1 - <= 100 nm
- Typical aspect ratio (:1):
- ca. 1 :1
- Range of aspect ratio (:1):
- >= 1 - <= 1
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
As shape is spheroidal, Typical lateral dimension 1, Typical lateral dimension 2 are equal to Typical Length . Typical Length is d50 value.
As shape is spheroidal, Typical aspect ration is 1 (the substance is not in fiber form).
Please see report 2020.075 - SID 17211. (ex batch number I044458101) - Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Typical composition:
- > 99.7 %
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
For concerned substance, please see reports HSL report_June 2018 / Laboratory number 1801858 LEVILITE Precipitated amorphous silica p3, 2020.075 - SID 17211 and ECETOC2006_2-3-1_xray.
Specific surface area
- Typical specific surface area:
- ca. 528 m²/g
- Range of specific surface area:
- >= 200 - <= 700 m²/g
- Typical volume specific surface area:
- ca. 1 104 m²/cm³
- Range of volume specific surface area:
- >= 400 - <= 1 500 m²/cm³
- Skeletal density:
- >= 1.7 - <= 2.25 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- spherical
- Pure shape:
- yes
- Typical composition:
- >= 99 %
- Range:
- >= 95 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Typical value:
- 73 nm
- Range:
- >= 69 - <= 76 nm
- Percentile:
- D10
- Typical value:
- 34 nm
- Range:
- >= 29 - <= 39 nm
- Percentile:
- D50
- Typical value:
- 55 nm
- Range:
- >= 47 - <= 59 nm
- Fraction of constituent particles in the size range 1-100 nm:
- >= 99.9 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- silica
- Pure structure:
- yes
- Typical composition:
- >= 99 %
- Range:
- >= 95 - <= 100 %
- Crystal system:
- not applicable
Specific surface area
- Typical specific surface area:
- 143.8 m²/g
- Range of specific surface area:
- >= 136.5 - <= 152.4 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: bulk
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
- State Form:
- solid: particulate/powder
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Nanoform
| Nanoform |
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- single nanoform
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Typical composition:
- 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- 12.7 nm
- Range:
- >= 1 - <= 15 nm
- Percentile:
- D50
- Typical value:
- 16.5 nm
- Range:
- >= 13 - <= 18 nm
- Percentile:
- D90
- Typical value:
- 20.1
- Range:
- >= 17 - <= 25 nm
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- amorphous
- Pure structure:
- yes
- Typical composition:
- > 99.7 %
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Typical specific surface area:
- 141.68 m²/g
- Range of specific surface area:
- >= 100 - <= 200 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 5 - <= 67.6 nm
- Percentile:
- D50
- Range:
- >= 5 - <= 40 nm
- Percentile:
- D10
- Range:
- >= 1 - <= 27.8 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal struc ture.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- In general, SAS contains no detectable amounts of crystalline silica. X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystal linity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- yes
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
- Range:
- >= 99 - <= 100 %
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D90
- Range:
- >= 10.2 - <= 103.7 nm
- Percentile:
- D10
- Range:
- >= 5.8 - <= 45.2 nm
- Percentile:
- D50
- Range:
- >= 8 - <= 69 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal struc ture.
- Fraction of constituent particles in the size range 1-100 nm:
- > 50 - <= 100 %
Crystallinity
Structures
- Structure:
- amorphous
- Pure structure:
- yes
- Range:
- > 99.7 - <= 100 %
- Description:
- X-ray diffraction diagrams of SAS, show only a broad halo, revealing an X-ray amorphous structure. The detection limit for crystallinity by X-ray is in the maximum order of 0.3% by weight or below.
Specific surface area
- Range of specific surface area:
- >= 4 - <= 1 000 m²/g
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no
- State Form:
- solid: nanoform
Constituent 1
- Reference substance name:
- Silicon dioxide
- EC Number:
- 231-545-4
- EC Name:
- Silicon dioxide
- CAS Number:
- 7631-86-9
- Molecular formula:
- O2Si
- IUPAC Name:
- dioxosilane
Characterisation of nanoforms
- Type of information reported:
- set of nanoforms
Cross-reference
- Reason / purpose:
- justification for reporting set of similar nanoforms
Shape
Shape description
- Shape category:
- spheroidal
- Shape:
- other: 3-dimensional branched fractal aggregates
- Pure shape:
- yes
Particle size distribution and range
Particle size distribution and range
- Shape category:
- spheroidal
Percentileopen allclose all
- Percentile:
- D10
- Typical value:
- ca. 55 nm
- Range:
- >= 45 - <= 80 nm
- Percentile:
- D50
- Typical value:
- ca. 100 nm
- Range:
- >= 80 - <= 150 nm
- Percentile:
- D90
- Typical value:
- ca. 260 nm
- Range:
- >= 190 - <= 330 nm
- Additional information:
- The particle forming mechanism for each manufacturing process starts with the formation of liquid nuclei that grow to constituent particles that coagulate to aggregates and solidify. Constituent particles are therefore spherical in nature while aggregates (and agglomerates) show a high fractal structure.
- Fraction of constituent particles in the size range 1-100 nm:
- >= 82 - <= 98 %
Crystallinity
Structures
- Structure:
- amorphous
- Name:
- synthetic amorphous silica
- Pure structure:
- yes
Specific surface area
- Typical specific surface area:
- ca. 160 m²/g
- Range of specific surface area:
- >= 85 - <= 235 m²/g
- Typical volume specific surface area:
- 342 m²/cm³
- Range of volume specific surface area:
- >= 182 - <= 503 m²/cm³
- Skeletal density:
- ca. 2.14 g/cm³
Surface functionalisation / treatment
- Surface treatment applied:
- no
- Does the set contain both treated and non-surface treated nanoforms?:
- no