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Identification

Chemical structure
Display Name:
4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
EC Number:
227-930-1
EC Name:
4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
CAS Number:
6041-94-7
Molecular formula:
C23H15Cl2N3O2
IUPAC Name:
4-[(2,5-dichlorophenyl)diazenyl]-3-hydroxy-N-phenyl-2-naphthamide

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • 6041-94-7
  • Versalová červeň F2R/F2RA/F2RS
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: nanoform
    Degree of purity:
    > 90 - < 100 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    EC Number:
    227-930-1
    EC Name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    CAS Number:
    6041-94-7
    Molecular formula:
    C23H15Cl2N3O2
    IUPAC Name:
    4-[(2,5-dichlorophenyl)diazenyl]-3-hydroxy-N-phenyl-2-naphthamide
    Impurity 1
    Chemical structure
    Reference substance name:
    3-hydroxy-2-naphthanilide
    EC Number:
    202-188-1
    EC Name:
    3-hydroxy-2-naphthanilide
    CAS Number:
    92-77-3
    Molecular formula:
    C17H13NO2
    IUPAC Name:
    3-hydroxy-N-phenyl-2-naphthamide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Red 2 - joint submission

    Shape

    Shape descriptionopen allclose all
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes
    Shape:
    cubic
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes
    Shape:
    spherical
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %
    Shape category:
    elongated
    Remarks:
    multimodal shapes
    Shape:
    rod
    Pure shape:
    yes
    Range:
    >= 0 - <= 100 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    ca. 0.004 - ca. 0.1 μm
    Percentile:
    D50
    Range:
    ca. 0.03 - ca. 0.1 μm
    Percentile:
    D90
    Range:
    ca. 0.05 - ca. 0.2 μm
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - ca. 100 %
    Shape category:
    elongated
    Remarks:
    multimodal shapes
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    ca. 0.004 - ca. 0.1 μm
    Percentile:
    D50
    Range:
    ca. 0.03 - ca. 0.1 μm
    Percentile:
    D90
    Range:
    ca. 0.05 - ca. 0.2 μm
    Range of length:
    ca. 0.1 - ca. 0.405 μm
    Range of aspect ratio (:1):
    >= 3 - <= 4.4
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - ca. 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Red 2
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 200 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform
    Degree of purity:
    >= 90 - <= 100 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    EC Number:
    227-930-1
    EC Name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    CAS Number:
    6041-94-7
    Molecular formula:
    C23H15Cl2N3O2
    IUPAC Name:
    4-[(2,5-dichlorophenyl)diazenyl]-3-hydroxy-N-phenyl-2-naphthamide
    Impurity 1
    Chemical structure
    Reference substance name:
    3-hydroxy-2-naphthanilide
    EC Number:
    202-188-1
    EC Name:
    3-hydroxy-2-naphthanilide
    CAS Number:
    92-77-3
    Molecular formula:
    C17H13NO2
    IUPAC Name:
    3-hydroxy-N-phenyl-2-naphthamide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Red 2 - joint submission

    Shape

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

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    ca. 0.004 - ca. 0.1 μm
    Percentile:
    D50
    Range:
    ca. 0.03 - ca. 0.1 μm
    Percentile:
    D90
    Range:
    ca. 0.05 - ca. 0.2 μm
    Range of length:
    ca. 0.1 - ca. 0.405 μm
    Range of aspect ratio (:1):
    >= 3 - <= 4.4
    Additional information:
    The particle size distribution relates to all shape categories
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - ca. 100 %
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    ca. 0.004 - ca. 0.1 μm
    Percentile:
    D50
    Range:
    ca. 0.03 - ca. 0.1 μm
    Percentile:
    D90
    Range:
    ca. 0.05 - ca. 0.2 μm
    Additional information:
    The particle size distribution relates to all shape categories
    Fraction of constituent particles in the size range 1-100 nm:
    > 50 - ca. 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Red 2
    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
    Degree of purity:
    > 95 - < 100 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    EC Number:
    227-930-1
    EC Name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    CAS Number:
    6041-94-7
    Molecular formula:
    C23H15Cl2N3O2
    IUPAC Name:
    4-[(2,5-dichlorophenyl)diazenyl]-3-hydroxy-N-phenyl-2-naphthamide
    Impurity 1
    Chemical structure
    Reference substance name:
    3-hydroxy-2-naphthanilide
    EC Number:
    202-188-1
    EC Name:
    3-hydroxy-2-naphthanilide
    CAS Number:
    92-77-3
    Molecular formula:
    C17H13NO2
    IUPAC Name:
    3-hydroxy-N-phenyl-2-naphthamide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Red 2 - joint submission

    Shape

    Shape descriptionopen allclose all
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes containing about 94% spheroidal particles and about 6% elongated particle
    Shape:
    cubic
    Pure shape:
    no
    Typical composition:
    ca. 89 %
    Range:
    > 70 - < 95 %
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes containing about 94% spheroidal particles and about 6% elongated particle
    Shape:
    spherical
    Pure shape:
    no
    Typical composition:
    ca. 5 %
    Range:
    > 0 - < 25 %
    Shape category:
    elongated
    Remarks:
    multimodal shapes containing about 94% spheroidal particles and about 6% elongated particle
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    ca. 6 %
    Range:
    > 0 - < 25 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Remarks:
    multimodal shapes containing abot 94% spheroidal particles and about 6% elongated particle
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.052 μm
    Range:
    ca. 0.02 - ca. 0.085 μm
    Percentile:
    D50
    Typical value:
    ca. 0.085 μm
    Range:
    ca. 0.055 - ca. 0.1 μm
    Percentile:
    D90
    Typical value:
    ca. 0.15 μm
    Range:
    ca. 0.12 - ca. 0.18 μm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - ca. 100 %
    Shape category:
    elongated
    Remarks:
    multimodal shapes containing abot 94% spheroidal particles and about 6% elongated particle
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 0.052 μm
    Range:
    ca. 0.02 - ca. 0.085 μm
    Percentile:
    D50
    Typical value:
    ca. 0.085 μm
    Range:
    ca. 0.055 - ca. 0.1 μm
    Percentile:
    D90
    Typical value:
    ca. 0.15 μm
    Range:
    ca. 0.12 - ca. 0.18 μm
    Typical length:
    0.252 μm
    Range of length:
    ca. 0.14 - ca. 0.365 μm
    Typical aspect ratio (:1):
    ca. 3.5 :1
    Range of aspect ratio (:1):
    >= 3 - <= 4.2
    Additional information:
    The determined particle size distribution relates to both shape categories. Due to the very low number of elongated particles, no separate evaluation for rods had been conducted. The smallest dimension of all particles had been considered.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - ca. 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Red 2
    Pure structure:
    yes
    Crystal system:
    monoclinic
    Bravais lattice:
    primitive moniclinic

    Specific surface area

    Typical specific surface area:
    32 m²/g
    Range of specific surface area:
    >= 22 - <= 42 m²/g
    Skeletal density:
    1.466 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform
    Degree of purity:
    >= 97 - <= 100 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    EC Number:
    227-930-1
    EC Name:
    4-[(2,5-dichlorophenyl)azo]-3-hydroxy-N-phenylnaphthalene-2-carboxamide
    CAS Number:
    6041-94-7
    Molecular formula:
    C23H15Cl2N3O2
    IUPAC Name:
    4-[(2,5-dichlorophenyl)diazenyl]-3-hydroxy-N-phenyl-2-naphthamide