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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
EC Number:
250-830-4
EC Name:
2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
CAS Number:
31837-42-0
Molecular formula:
C18H15N5O5
IUPAC Name:
2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • Pigment Yellow 151
  • CHROMOFINE YELLOW 2085C
  • HF4G
  • PY151
  • Pigment Yellow 151
  • Sudaperm Yellow 2903
  • Versalová žluť H4G
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Yellow 151 - 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 - < 50 %
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    > 0 - < 80 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.02 - <= 0.1 μm
    Percentile:
    D50
    Range:
    >= 0.04 - <= 0.14 μm
    Percentile:
    D90
    Range:
    >= 0.08 - <= 0.2 μm
    Additional information:
    the particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.02 - <= 0.1 μm
    Percentile:
    D50
    Range:
    >= 0.04 - <= 0.14 μm
    Percentile:
    D90
    Range:
    >= 0.08 - <= 0.2 μm
    Range of length:
    >= 0.2 - <= 0.6 μm
    Range of aspect ratio (:1):
    >= 3 - <= 4
    Additional information:
    the particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Yellow 151
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 50 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid

    Legal Entity Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Yellow 151 - 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 - < 50 %
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Range:
    > 0 - < 80 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.02 - <= 0.1 μm
    Percentile:
    D50
    Range:
    >= 0.04 - <= 0.14 μm
    Percentile:
    D90
    Range:
    >= 0.08 - <= 0.2 μm
    Additional information:
    the particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.02 - <= 0.1 μm
    Percentile:
    D50
    Range:
    >= 0.04 - <= 0.14 μm
    Percentile:
    D90
    Range:
    >= 0.08 - <= 0.2 μm
    Range of length:
    >= 0.2 - <= 0.6 μm
    Range of aspect ratio (:1):
    >= 3 - <= 4
    Additional information:
    the particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Yellow 151
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 50 m²/g
    Skeletal density:
    1.55 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Yellow 151

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    cubic
    Pure shape:
    yes
    Typical composition:
    ca. 100 %
    Range:
    >= 90 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D90
    Typical value:
    ca. 145.65 nm
    Range:
    >= 100 - <= 150 nm
    Percentile:
    D50
    Typical value:
    ca. 98.94 nm
    Range:
    >= 90 - <= 100 nm
    Percentile:
    D10
    Typical value:
    ca. 53.51 nm
    Range:
    >= 50 - <= 55 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 0 - <= 50 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Pigment Yellow 151
    Pure structure:
    yes
    Typical composition:
    ca. 100 %
    Range:
    >= 90 - <= 100 %

    Specific surface area

    Typical specific surface area:
    ca. 18.709 m²/g
    Range of specific surface area:
    >= 15 - <= 20 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    EC Number:
    250-830-4
    EC Name:
    2-[[1-[[(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)amino]carbonyl]-2-oxopropyl]azo]benzoic acid
    CAS Number:
    31837-42-0
    Molecular formula:
    C18H15N5O5
    IUPAC Name:
    2-({2-oxo-1-[(2-oxo-2,3-dihydro-1H-benzimidazol-5-yl)carbamoyl]propyl}diazenyl)benzoic acid