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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
EC Number:
297-025-4
EC Name:
2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
CAS Number:
93281-13-1
Molecular formula:
C34H24N9O11S3.3Na
IUPAC Name:
2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts

Type of Substance

Composition:
UVCB
Origin:
organic

Substance Identifiers open all close all

  • 297-025-4
  • Everlan SL9A
  • Negro Trupocor SC
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
    EC Number:
    297-025-4
    EC Name:
    2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
    CAS Number:
    93281-13-1
    Molecular formula:
    C34H24N9O11S3.3Na
    IUPAC Name:
    2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts

    Legal Entity Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Trisodium 4-amino-3-[[4-[[4-[(4-amino-2-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    EC Number:
    304-392-7
    EC Name:
    Trisodium 4-amino-3-[[4-[[4-[(4-amino-2-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    CAS Number:
    94249-18-0
    Molecular formula:
    C34H27N9O11S3.3Na
    IUPAC Name:
    trisodium 4-amino-3-{[4-({4-[(4-amino-2-hydroxyphenyl)diazenyl]phenyl}amino)-3-sulfonatophenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate
    Constituent 2
    Chemical structure
    Reference substance name:
    Trisodium 4-amino-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    EC Number:
    288-038-6
    EC Name:
    Trisodium 4-amino-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    CAS Number:
    85631-88-5
    Molecular formula:
    C34H27N9O11S3.3Na
    IUPAC Name:
    trisodium 4-amino-3-{[4-({4-[(2-amino-4-hydroxyphenyl)diazenyl]phenyl}amino)-3-sulfonatophenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate
    Constituent 3
    Chemical structure
    Reference substance name:
    hexasodium;4-amino-3-[(E)-[4-[4-[(E)-[2-amino-5-[(E)-[4-[4-[(E)-[1-amino-8-hydroxy-7-[(E)-phenylazo]-3,6-disulfonato-2-naphthyl]azo]-2-sulfonato-anilino]phenyl]azo]-4-hydroxy-phenyl]azo]anilino]-3-sulfonato-phenyl]azo]-5-hydroxy-6-[(E)-phenylazo]naphthalene-2,7-disulfonate
    Molecular formula:
    C62H41N17O21S6.6Na
    IUPAC Name:
    hexasodium;4-amino-3-[(E)-[4-[4-[(E)-[2-amino-5-[(E)-[4-[4-[(E)-[1-amino-8-hydroxy-7-[(E)-phenylazo]-3,6-disulfonato-2-naphthyl]azo]-2-sulfonato-anilino]phenyl]azo]-4-hydroxy-phenyl]azo]anilino]-3-sulfonato-phenyl]azo]-5-hydroxy-6-[(E)-phenylazo]naphthalene-2,7-disulfonate
    Constituent 4
    Reference substance name:
    Direct Black 168 By-product 1 isomer
    Molecular formula:
    C62H41N17O21S6.6Na
    IUPAC Name:
    Direct Black 168 By-product 1 isomer
    Constituent 5
    Reference substance name:
    organic compounds
    Molecular formula:
    not applicable
    IUPAC Name:
    organic compounds
    Constituent 6
    Reference substance name:
    Sum of unknown impurities under 1 %
    Molecular formula:
    not applicable
    IUPAC Name:
    Sum of unknown impurities under 1 %
    Constituent 7
    Chemical structure
    Reference substance name:
    Water
    EC Number:
    231-791-2
    EC Name:
    Water
    CAS Number:
    7732-18-5
    Molecular formula:
    H2O
    IUPAC Name:
    water
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
    EC Number:
    297-025-4
    EC Name:
    2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
    CAS Number:
    93281-13-1
    Molecular formula:
    C34H24N9O11S3.3Na
    IUPAC Name:
    2,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy-, coupled with 3-aminophenol, diazotized 5-amino-2-[(4-aminophenyl)amino]benzenesulfonic acid and diazotized benzenamine, sodium salts
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Water
    EC Number:
    231-791-2
    EC Name:
    Water
    CAS Number:
    7732-18-5
    Molecular formula:
    H2O
    IUPAC Name:
    water
    Constituent 2
    Chemical structure
    Reference substance name:
    Trisodium 4-amino-3-[[4-[[4-[(4-amino-2-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    EC Number:
    304-392-7
    EC Name:
    Trisodium 4-amino-3-[[4-[[4-[(4-amino-2-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    CAS Number:
    94249-18-0
    Molecular formula:
    C34H27N9O11S3.3Na
    IUPAC Name:
    trisodium 4-amino-3-{[4-({4-[(4-amino-2-hydroxyphenyl)diazenyl]phenyl}amino)-3-sulfonatophenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate
    Constituent 3
    Chemical structure
    Reference substance name:
    Trisodium 4-amino-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    EC Number:
    288-038-6
    EC Name:
    Trisodium 4-amino-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    CAS Number:
    85631-88-5
    Molecular formula:
    C34H27N9O11S3.3Na
    IUPAC Name:
    trisodium 4-amino-3-{[4-({4-[(2-amino-4-hydroxyphenyl)diazenyl]phenyl}amino)-3-sulfonatophenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate
    Constituent 4
    Chemical structure
    Reference substance name:
    trisodium;4-amino-3-[(E)-[4-[4-[(E)-(4-amino-2-hydroxy-phenyl)azo]anilino]-3-sulfonato-phenyl]azo]-5-hydroxy-6-[(E)-[4-[(E)-phenylazo]phenyl]azo]naphthalene-2,7-disulfonate
    Molecular formula:
    C40H28N11O11S3.3Na
    IUPAC Name:
    trisodium;4-amino-3-[(E)-[4-[4-[(E)-(4-amino-2-hydroxy-phenyl)azo]anilino]-3-sulfonato-phenyl]azo]-5-hydroxy-6-[(E)-[4-[(E)-phenylazo]phenyl]azo]naphthalene-2,7-disulfonate
    Constituent 5
    Chemical structure
    Reference substance name:
    Disodium 5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate
    EC Number:
    222-656-9
    EC Name:
    Disodium 5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate
    CAS Number:
    3567-66-6
    Molecular formula:
    C16H13N3O7S2.2Na
    IUPAC Name:
    Disodium; 5-amino-4-hydroxy-3-[(E)-phenylazo]naphthalene-2,7-disulfonate
    Constituent 6
    Chemical structure
    Reference substance name:
    Pentasodium; 4-amino-3-[(E)-[4-[4-[(E)-(8-amino-1-hydroxy-3,6-disulfo-2-naphthyl)azo]anilino]-3-sulfo-phenyl]azo]-5-hydroxy-6-[(E)-phenylazo]naphthalene-2,7-disulfonate
    Molecular formula:
    C38H24N9O17S5.5Na
    IUPAC Name:
    Pentasodium; 4-amino-3-[(E)-[4-[4-[(E)-(8-amino-1-hydroxy-3,6-disulfo-2-naphthyl)azo]anilino]-3-sulfo-phenyl]azo]-5-hydroxy-6-[(E)-phenylazo]naphthalene-2,7-disulfonate
    Constituent 7
    Chemical structure
    Reference substance name:
    Trisodium; 4-amino-3-[(E)-[4-(4-amino-2-hydroxy-anilino)-3-sulfo-phenyl]azo]-5-hydroxy-6-[(E)-phenylazo]naphthalene-2,7-disulfonate
    Molecular formula:
    C28H20N7O11S3.3Na
    IUPAC Name:
    Trisodium; 4-amino-3-[(E)-[4-(4-amino-2-hydroxy-anilino)-3-sulfo-phenyl]azo]-5-hydroxy-6-[(E)-phenylazo]naphthalene-2,7-disulfonate
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Trisodium 4-amino-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    EC Number:
    288-038-6
    EC Name:
    Trisodium 4-amino-3-[[4-[[4-[(2-amino-4-hydroxyphenyl)azo]phenyl]amino]-3-sulphonatophenyl]azo]-5-hydroxy-6-(phenylazo)naphthalene-2,7-disulphonate
    CAS Number:
    85631-88-5
    Molecular formula:
    C34H27N9O11S3.3Na
    IUPAC Name:
    trisodium 4-amino-3-{[4-({4-[(2-amino-4-hydroxyphenyl)diazenyl]phenyl}amino)-3-sulfonatophenyl]diazenyl}-5-hydroxy-6-(phenyldiazenyl)naphthalene-2,7-disulfonate
    Constituent 2
    Chemical structure
    Reference substance name:
    pentasodium 4-amino-6-[(E)-2-[4-({4-[(E)-2-(1-amino-8-hydroxy-3,6-disulfonaphthalen-2-yl)diazen-1-yl]phenyl}amino)-3-sulfophenyl]diazen-1-yl]-5-hydroxy-3-[(E)-2-phenyldiazen-1-yl]naphthalene-2,7-disulfonate
    Molecular formula:
    C38H24N9Na5O17S5
    IUPAC Name:
    pentasodium 4-amino-6-[(E)-2-[4-({4-[(E)-2-(1-amino-8-hydroxy-3,6-disulfonaphthalen-2-yl)diazen-1-yl]phenyl}amino)-3-sulfophenyl]diazen-1-yl]-5-hydroxy-3-[(E)-2-phenyldiazen-1-yl]naphthalene-2,7-disulfonate
    Constituent 3
    Chemical structure
    Reference substance name:
    5-[(E)-2-{2-amino-4-hydroxy-5-[(E)-2-phenyldiazen-1-yl]phenyl}diazen-1-yl]-2-({4-[(E)-2-{2-amino-4-hydroxy-5-[(E)-2-phenyldiazen-1-yl]phenyl}diazen-1-yl]phenyl}amino)benzene-1-sulfonic acid
    Molecular formula:
    C36H28N11NaO5S
    IUPAC Name:
    5-[(E)-2-{2-amino-4-hydroxy-5-[(E)-2-phenyldiazen-1-yl]phenyl}diazen-1-yl]-2-({4-[(E)-2-{2-amino-4-hydroxy-5-[(E)-2-phenyldiazen-1-yl]phenyl}diazen-1-yl]phenyl}amino)benzene-1-sulfonic acid
    Constituent 4
    Chemical structure
    Reference substance name:
    sodium 3-amino-6-({4-amino-3-[(Z)-2-phenyldiazen-1-yl]phenyl}amino)-2-[(E)-2-[4-({4-[(E)-2-(4-aminophenyl)diazen-1-yl]phenyl}amino)phenyl]diazen-1-yl]benzene-1-sulfonate
    Molecular formula:
    C36H30N11NaO3S
    IUPAC Name:
    sodium 3-amino-6-({4-amino-3-[(Z)-2-phenyldiazen-1-yl]phenyl}amino)-2-[(E)-2-[4-({4-[(E)-2-(4-aminophenyl)diazen-1-yl]phenyl}amino)phenyl]diazen-1-yl]benzene-1-sulfonate
    Constituent 5
    Chemical structure
    Reference substance name:
    sodium 5-[(E)-2-(2-amino-4-hydroxyphenyl)diazen-1-yl]-2-({4-[(E)-2-(2-amino-4-hydroxyphenyl)diazen-1-yl]phenyl}amino)benzene-1-sulfonate
    Molecular formula:
    C24H20N7NaO5S
    IUPAC Name:
    sodium 5-[(E)-2-(2-amino-4-hydroxyphenyl)diazen-1-yl]-2-({4-[(E)-2-(2-amino-4-hydroxyphenyl)diazen-1-yl]phenyl}amino)benzene-1-sulfonate
    Constituent 6