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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
EC Number:
219-730-8
EC Name:
2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
CAS Number:
2512-29-0
Molecular formula:
C17H16N4O4
IUPAC Name:
2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • 2512-29-0
  • SEIKAFAST YELLOW 2070
  • Sudacolor Yellow G
  • Versalová žluť G
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Yellow 1-joint submission

    Shape

    Shape descriptionopen allclose all
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    no
    Range:
    > 5 - < 60 %
    Shape category:
    spheroidal
    Shape:
    spherical
    Pure shape:
    no
    Range:
    > 0 - < 20 %
    Shape category:
    spheroidal
    Shape:
    cubic
    Pure shape:
    no
    Range:
    > 50 - < 70 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D90
    Range:
    > 0.07 - < 0.155 μm
    Percentile:
    D50
    Range:
    > 0.03 - < 0.1 μm
    Percentile:
    D10
    Range:
    > 0.01 - < 0.09 μm
    Range of length:
    > 0.075 - < 0.585 μm
    Range of aspect ratio (:1):
    >= 2.8 - <= 5
    Additional information:
    The determined particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.

    ASSEMBLY STRUCTURE: homogeneous and solid particles.

    RIGIDITY: not required/appropriate.
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - < 100 %
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D90
    Range:
    > 0.07 - < 0.155 μm
    Percentile:
    D50
    Range:
    > 0.03 - < 0.1 μm
    Percentile:
    D10
    Range:
    > 0.01 - < 0.09 μm
    Additional information:
    The determined particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.

    ASSEMBLY STRUCTURE: homogeneous and solid particles.

    RIGIDITY: not required/appropriate.
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - < 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Yellow 1
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 125 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide

    Legal Entity Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Yellow 1 -joint submission

    Shape

    Shape descriptionopen allclose all
    Shape category:
    elongated
    Remarks:
    multimodal shapes containing about 71% spheroidal particles and about 29% elongated particles
    Shape:
    rod
    Pure shape:
    no
    Typical composition:
    ca. 29 %
    Range:
    > 5 - < 60 %
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes containing about 71% spheroidal particles and about 29% elongated particles
    Shape:
    spherical
    Pure shape:
    no
    Typical composition:
    ca. 3.5 %
    Range:
    > 0 - < 20 %
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes containing about 71% spheroidal particles and about 29% elongated particles
    Shape:
    cubic
    Pure shape:
    no
    Typical composition:
    ca. 67.5 %
    Range:
    > 55 - < 70 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    elongated
    Remarks:
    multimodal shapes containing about 71% spheroidal particles and about 29% elongated particles
    Percentileopen allclose all
    Percentile:
    D90
    Typical value:
    ca. 0.115 μm
    Range:
    > 0.085 - < 0.145 μm
    Percentile:
    D50
    Typical value:
    ca. 0.07 μm
    Range:
    > 0.04 - < 0.1 μm
    Percentile:
    D10
    Typical value:
    ca. 0.045
    Range:
    > 0.025 - < 0.075 μm
    Typical length:
    ca. 0.33 μm
    Range of length:
    > 0.265 - < 0.385 μm
    Typical aspect ratio (:1):
    ca. 3.9 :1
    Range of aspect ratio (:1):
    >= 3.7 - <= 4.1
    Additional information:
    The determined particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.

    ASSEMBLY STRUCTURE: homogeneous and solid particles.

    RIGIDITY: not required/appropriate.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - ca. 100 %
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes containing about 71% spheroidal particles and about 29% elongated particles
    Percentileopen allclose all
    Percentile:
    D90
    Typical value:
    ca. 0.115
    Range:
    > 0.085 - 0.145 μm
    Percentile:
    D50
    Typical value:
    ca. 0.07
    Range:
    > 0.04 - < 0.1 μm
    Percentile:
    D10
    Typical value:
    ca. 0.045
    Range:
    > 0.025 - < 0.075 μm
    Additional information:
    The determined particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.

    ASSEMBLY STRUCTURE: homogeneous and solid particles.

    RIGIDITY: not required/appropriate.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - ca. 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Yellow 1
    Pure structure:
    yes
    Crystal system:
    monoclinic
    Bravais lattice:
    primitive moniclinic

    Specific surface area

    Typical specific surface area:
    ca. 20 m²/g
    Range of specific surface area:
    >= 14 - <= 26 m²/g
    Skeletal density:
    1.387 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    This nanoform is covered by a registration:
    yes
    Name of nanoform:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide

    Shape

    Shape descriptionopen allclose all
    Shape category:
    spheroidal
    Shape:
    spherical
    Pure shape:
    no
    Range:
    > 0 - < 20 %
    Shape category:
    spheroidal
    Shape:
    cubic
    Pure shape:
    no
    Range:
    > 50 - < 60 %
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    no
    Range:
    > 10 - 60 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 63 nm
    Range:
    > 10 - < 90 nm
    Percentile:
    D50
    Typical value:
    ca. 73 nm
    Range:
    > 30 - < 100 nm
    Percentile:
    D90
    Typical value:
    ca. 82 nm
    Range:
    > 70 - < 150 nm
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - < 100 %
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 63 nm
    Range:
    > 10 - < 90 nm
    Percentile:
    D50
    Typical value:
    ca. 73 nm
    Range:
    > 30 - < 100 nm
    Percentile:
    D90
    Typical value:
    ca. 82 nm
    Range:
    > 70 - < 150 nm
    Range of length:
    > 75 - < 470 nm
    Range of aspect ratio (:1):
    >= 3.5 - <= 5
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - < 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Pigment Yellow 1
    Pure structure:
    yes
    Description:
    Pigment looks crystalline in nature

    Specific surface area

    Typical specific surface area:
    ca. 27.98 m²/g
    Range of specific surface area:
    > 20 - < 75 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Pigment Yellow 1_Nanoform_Spheroidal

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    spherical
    Pure shape:
    yes

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 33 nm
    Range:
    > 1 - < 60 nm
    Percentile:
    D50
    Typical value:
    ca. 70 nm
    Range:
    > 10 - <= 100 nm
    Percentile:
    D90
    Typical value:
    ca. 161 nm
    Range:
    > 40 - < 250 nm
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Pigment Yellow 1
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 25.3 m²/g
    Range of specific surface area:
    > 10 - < 70 m²/g

    Surface functionalisation / treatment

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


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide


    Constituent 1
    Chemical structure
    Reference substance name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    EC Number:
    219-730-8
    EC Name:
    2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
    CAS Number:
    2512-29-0
    Molecular formula:
    C17H16N4O4
    IUPAC Name:
    2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-N-phenylbutanamide

    Composition(s) generated upon use

    Other types of composition(s)