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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
EC Number:
219-163-6
EC Name:
6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
CAS Number:
2379-74-0
Molecular formula:
C18H10Cl2O2S2
IUPAC Name:
6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers open all close all

  • D & C Red 30 (Vat Red ), D & C Red 30 (Vat Red, Al Lake), D & C Red 30 (Vat Red, Talc Lake )
  • D & C Red no. 30
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    EC Number:
    219-163-6
    EC Name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    CAS Number:
    2379-74-0
    Molecular formula:
    C18H10Cl2O2S2
    IUPAC Name:
    6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Red 181 - joint submission

    Shape

    Shape descriptionopen allclose all
    Shape category:
    spheroidal
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Shape:
    cubic
    Pure shape:
    no
    Range:
    > 40 - < 100 %
    Shape category:
    spheroidal
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Shape:
    spherical
    Pure shape:
    no
    Range:
    > 0 - < 30 %
    Shape category:
    elongated
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Shape:
    rod
    Pure shape:
    no
    Range:
    > 0 - < 60 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.01 - <= 0.04 μm
    Percentile:
    D50
    Range:
    >= 0.02 - <= 0.06 μm
    Percentile:
    D90
    Range:
    >= 0.03 - <= 0.1 μm
    Additional information:
    The particle size distribution relates to both shape categories.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 80 - <= 100 %
    Shape category:
    elongated
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.01 - <= 0.04 μm
    Percentile:
    D50
    Range:
    >= 0.02 - <= 0.06 μm
    Percentile:
    D90
    Range:
    >= 0.03 - <= 0.1 μm
    Range of length:
    >= 0.01 - <= 0.34 μm
    Range of aspect ratio (:1):
    >= 3 - <= 4.8
    Additional information:
    The particle size distribution relates to both shape categories.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 80 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Red 181
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 5 - <= 125 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:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    EC Number:
    219-163-6
    EC Name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    CAS Number:
    2379-74-0
    Molecular formula:
    C18H10Cl2O2S2
    IUPAC Name:
    6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    C.I. Pigment Red 181 - joint submission

    Shape

    Shape descriptionopen allclose all
    Shape category:
    spheroidal
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Shape:
    cubic
    Pure shape:
    no
    Range:
    > 40 - < 100 %
    Shape category:
    spheroidal
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Shape:
    spherical
    Pure shape:
    no
    Range:
    > 0 - < 30 %
    Shape category:
    elongated
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Shape:
    rod
    Pure shape:
    no
    Range:
    > 0 - < 60 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.01 - <= 0.04 μm
    Percentile:
    D50
    Range:
    >= 0.02 - <= 0.06 μm
    Percentile:
    D90
    Range:
    >= 0.03 - <= 0.1 μm
    Additional information:
    The particle size distribution relates to both shape categories. The smallest dimenstion of all particles had been considered.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 80 - <= 100 %
    Shape category:
    elongated
    Remarks:
    Multimodal shapes containing spheroidal and elongated particles
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 0.01 - <= 0.04 μm
    Percentile:
    D50
    Range:
    >= 0.02 - <= 0.06 μm
    Percentile:
    D90
    Range:
    >= 0.03 - <= 0.1 μm
    Range of length:
    >= 0.05 - <= 0.3 μm
    Range of aspect ratio (:1):
    >= 3 - <= 4.6
    Additional information:
    The particle size distribution relates to both shape categories. The smallest dimenstion of all particles had been considered.
    Fraction of constituent particles in the size range 1-100 nm:
    >= 80 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    C.I. Pigment Red 181
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    >= 30 - <= 70 m²/g
    Skeletal density:
    1.626 g/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    EC Number:
    219-163-6
    EC Name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    CAS Number:
    2379-74-0
    Molecular formula:
    C18H10Cl2O2S2
    IUPAC Name:
    6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Pigment Red 181_Nanoform_Elongated

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 35 nm
    Range:
    > 1 - < 60 nm
    Percentile:
    D50
    Typical value:
    ca. 53 nm
    Range:
    > 10 - <= 100 nm
    Percentile:
    D90
    Typical value:
    ca. 84 nm
    Range:
    > 30 - < 130 nm
    Typical length:
    ca. 186 nm
    Range of length:
    > 30 - < 450 nm
    Typical aspect ratio (:1):
    ca. 3.1 :1
    Range of aspect ratio (:1):
    >= 3 - <= 4
    Fraction of constituent particles in the size range 1-100 nm:
    > 80 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Pigment Red 181
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 41.6 m²/g
    Range of specific surface area:
    > 5 - < 150 m²/g

    Surface functionalisation / treatment

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


    Constituent 1
    Chemical structure
    Reference substance name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    EC Number:
    219-163-6
    EC Name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    CAS Number:
    2379-74-0
    Molecular formula:
    C18H10Cl2O2S2
    IUPAC Name:
    6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    EC Number:
    219-163-6
    EC Name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    CAS Number:
    2379-74-0
    Molecular formula:
    C18H10Cl2O2S2
    IUPAC Name:
    6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    EC Number:
    219-163-6
    EC Name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    CAS Number:
    2379-74-0
    Molecular formula:
    C18H10Cl2O2S2
    IUPAC Name:
    6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    EC Number:
    219-163-6
    EC Name:
    6-chloro-2-(6-chloro-4-methyl-3-oxobenzo[b]thien-2(3H)-ylidene)-4-methylbenzo[b]thiophene-3(2H)-one
    CAS Number:
    2379-74-0
    Molecular formula:
    C18H10Cl2O2S2
    IUPAC Name:
    6-chloro-2-[(2E)-6-chloro-4-methyl-3-oxo-2,3-dihydro-1-benzothiophen-2-ylidene]-4-methyl-2,3-dihydro-1-benzothiophen-3-one

    Composition(s) generated upon use

    Other types of composition(s)