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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
EC Number:
250-800-0
EC Name:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
CAS Number:
31778-10-6
Molecular formula:
C29H25N5O5
IUPAC Name:
butyl 2-({2-hydroxy-3-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]-1-naphthyl}diazenyl)benzoate

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers

Compositions

Boundary Composition(s) open all close all

State Form:
solid: nanoform


Constituent 1
Chemical structure
Reference substance name:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
EC Number:
250-800-0
EC Name:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
CAS Number:
31778-10-6
Molecular formula:
C29H25N5O5
IUPAC Name:
butyl 2-({2-hydroxy-3-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]-1-naphthyl}diazenyl)benzoate

Characterisation of nanoforms

Type of information reported:
single nanoform
Name of nanoform:
C.I. Pigment Red 208 - joint submission

Shape

Shape descriptionopen allclose all
Shape category:
spheroidal
Shape:
cubic
Pure shape:
no
Range:
>= 0 - <= 100 %
Shape category:
spheroidal
Shape:
spherical
Pure shape:
no
Range:
>= 0 - <= 100 %

Particle size distribution and range

Particle size distribution and range
Shape category:
spheroidal
Percentileopen allclose all
Percentile:
D10
Range:
ca. 0.01 - ca. 0.035 μm
Percentile:
D50
Range:
ca. 0.01 - ca. 0.045 μm
Percentile:
D90
Range:
ca. 0.02 - ca. 0.055 μm
Fraction of constituent particles in the size range 1-100 nm:
>= 90 - ca. 100 %

Crystallinity

Structures
Structure:
crystalline
Name:
C.I. Pigment Red 208
Pure structure:
yes

Specific surface area

Range of specific surface area:
>= 5 - <= 200 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:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
EC Number:
250-800-0
EC Name:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
CAS Number:
31778-10-6
Molecular formula:
C29H25N5O5
IUPAC Name:
butyl 2-({2-hydroxy-3-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]-1-naphthyl}diazenyl)benzoate

Characterisation of nanoforms

Type of information reported:
single nanoform
Name of nanoform:
C.I. Pigment Red 208 - joint submission

Shape

Shape descriptionopen allclose all
Shape category:
spheroidal
Shape:
cubic
Pure shape:
no
Typical composition:
ca. 10 %
Range:
> 0 - < 20 %
Shape category:
spheroidal
Shape:
spherical
Pure shape:
no
Typical composition:
ca. 90 %
Range:
> 80 - < 100 %

Particle size distribution and range

Particle size distribution and range
Shape category:
spheroidal
Percentileopen allclose all
Percentile:
D10
Typical value:
ca. 0.018 μm
Range:
ca. 0.01 - ca. 0.035 μm
Percentile:
D50
Typical value:
ca. 0.027 μm
Range:
ca. 0.01 - ca. 0.045 μm
Percentile:
D90
Typical value:
ca. 0.039 μm
Range:
ca. 0.02 - ca. 0.055 μm
Fraction of constituent particles in the size range 1-100 nm:
>= 90 - ca. 100 %

Crystallinity

Structures
Structure:
crystalline
Name:
C.I. Pigment Red 208
Pure structure:
yes
Crystal system:
monoclinic
Bravais lattice:
primitive moniclinic

Specific surface area

Typical specific surface area:
ca. 55 m²/g
Range of specific surface area:
>= 38 - <= 72 m²/g
Skeletal density:
1.424 g/cm³

Surface functionalisation / treatment

Surface treatment applied:
no


Constituent 1
Chemical structure
Reference substance name:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
EC Number:
250-800-0
EC Name:
Butyl 2-[[3-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-hydroxy-1-naphthyl]azo]benzoate
CAS Number:
31778-10-6
Molecular formula:
C29H25N5O5
IUPAC Name:
butyl 2-({2-hydroxy-3-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]-1-naphthyl}diazenyl)benzoate

Composition(s) generated upon use

Other types of composition(s)