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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Identification

Chemical structure
Display Name:
Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
EC Number:
285-349-9
EC Name:
Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
CAS Number:
85085-18-3
Molecular formula:
Na0.7[Mg5.3Li0.7Si8O20(OH)0.0F4.0]
IUPAC Name:
Synthetic fluorohectorite

Type of Substance

Composition:
mono-constituent substance
Origin:
inorganic

Substance Identifiers open all close all

  • Laponite B
  • Laponite XL21
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    EC Number:
    285-349-9
    EC Name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    CAS Number:
    85085-18-3
    Molecular formula:
    Na0.7[Mg5.3Li0.7Si8O20(OH)0.0F4.0]
    IUPAC Name:
    Synthetic fluorohectorite

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Synthetic fluorohectorite (Type 1 LAPONITE)

    Shape

    Shape description
    Shape category:
    platelet
    Shape:
    plate
    Pure shape:
    yes

    Particle size distribution and range

    Crystallinity

    Specific surface area

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    EC Number:
    285-349-9
    EC Name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    CAS Number:
    85085-18-3
    Molecular formula:
    Na0.7[Mg5.3Li0.7Si8O20(OH)0.0F4.0]
    IUPAC Name:
    Synthetic fluorohectorite

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Trioctahedral smectite clay

    Shape

    Shape description
    Shape category:
    platelet
    Shape:
    plate
    Pure shape:
    yes

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    platelet
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    > 0.4 - < 2.5 μm
    Percentile:
    D50
    Range:
    > 1.4 - < 35 μm
    Percentile:
    D90
    Range:
    > 4.5 - < 90 μm
    Range of lateral dimension 1:
    >= 1 - <= 200 μm
    Range of lateral dimension 2:
    >= 1 - <= 200 μm
    Typical aspect ratio (:1):
    ca. 100 000 :1
    Range of aspect ratio (:1):
    >= 1 000 - <= 200 000
    Additional information:
    The boundary composition reflects LAPONITE Type 1 and the Barrier Silicate both in powder form. In powder form both compositions consist of powder granules. The powder granules are micro-sized particles. Hence the percentile and the lateral dimension are presented in micrometer.
    The aspect ratio is the result from the lateral dimension (>=1 <=200 micrometer) divided by the thickness (1nm).
    Lateral dimension and aspect ratio of powder form: The size of the particles in powder form is mainly controlled by the characteristics of the milling process and may range from ~1µm to ~200µm with widely variable aspect ratio.

    Because the boundary composition reflects the aggregated powder form the "fraction of constituent particles in the size range 1-100 nm" is < 1 %.
    Fraction of constituent particles in the size range 1-100 nm:
    > 0 - < 1 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Trioctahedral smectite clay
    Pure structure:
    yes
    Crystal system:
    other: Trioctahedral smectite clay

    Specific surface area

    Typical specific surface area:
    ca. 418 m²/g
    Range of specific surface area:
    > 0 - < 700 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no

    Legal Entity Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    EC Number:
    285-349-9
    EC Name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    CAS Number:
    85085-18-3
    Molecular formula:
    Na0.7[Mg5.3Li0.7Si8O20(OH)0.0F4.0]
    IUPAC Name:
    Synthetic fluorohectorite

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Synthetic fluorohectorite (Type 1 LAPONITE)

    Shape

    Shape description
    Shape category:
    platelet
    Shape:
    plate
    Pure shape:
    yes

    Particle size distribution and range

    Crystallinity

    Specific surface area

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    EC Number:
    285-349-9
    EC Name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    CAS Number:
    85085-18-3
    Molecular formula:
    Na0.7[Mg5.3Li0.7Si8O20(OH)0.0F4.0]
    IUPAC Name:
    Synthetic fluorohectorite

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Synthetic fluorohectorite (Type 1 LAPONITE)

    Shape

    Shape description
    Shape category:
    platelet
    Shape:
    plate
    Pure shape:
    yes

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    EC Number:
    285-349-9
    EC Name:
    Silicate(2-), hexafluoro-, disodium, reaction products with lithium magnesium sodium silicate
    CAS Number:
    85085-18-3
    Molecular formula:
    Na0.7[Mg5.3Li0.7Si8O20(OH)0.0F4.0]
    IUPAC Name:
    Synthetic fluorohectorite

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Trioctahedral smectite clay

    Shape

    Shape description
    Shape category:
    platelet
    Shape:
    plate
    Pure shape:
    yes

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    platelet
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.6 μm
    Range:
    > 0.4 - < 0.8 μm
    Percentile:
    D50
    Typical value:
    ca. 1.73 μm
    Range:
    > 1.2 - < 2 μm
    Percentile:
    D90
    Typical value:
    ca. 5.25 μm
    Range:
    > 4 - < 6.5 μm
    Range of lateral dimension 1:
    >= 1 - <= 9 μm
    Range of lateral dimension 2:
    >= 1 - <= 9 μm
    Typical aspect ratio (:1):
    ca. 5 000 :1
    Range of aspect ratio (:1):
    >= 1 000 - <= 9 000
    Additional information:
    The barrier silicate has two dimensions in the µm range while one dimension (thickness) is in the range of 0.9 – 1.7 nm. The aspect ratio is the result from the lateral dimension (>=1 <=9 micrometer) divided by the thickness (1nm).
    Fraction of constituent particles in the size range 1-100 nm:
    > 0 - < 1 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Trioctahedral smectite clay
    Pure structure:
    yes
    Crystal system:
    other: Trioctahedral smectite clay

    Specific surface area

    Typical specific surface area:
    ca. 2.5 m²/g
    Range of specific surface area:
    > 0 - < 400 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1