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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Display Name:
disodium 3-[(1E)-2-(4-dodecylphenyl)diazen-1-yl]-5-acetamido-4-hydroxynaphthalene-2,7-disulfonate
EC Number:
946-819-5
Molecular formula:
Not applicable for UVCB substance
IUPAC Name:
disodium 3-[(1E)-2-(4-dodecylphenyl)diazen-1-yl]-5-acetamido-4-hydroxynaphthalene-2,7-disulfonate

Type of Substance

Composition:
UVCB
Origin:
organic

Substance Identifiers open all close all

  • Acid Red 138
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    EC Number:
    239-893-9
    EC Name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    CAS Number:
    15792-43-5
    Molecular formula:
    C30H37N3Na2O8S2
    IUPAC Name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    Constituent 2
    Chemical structure
    Reference substance name:
    Disodium 5-(acetylamino)-3-[(4-undecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    Molecular formula:
    C29H35N3Na2O8S2
    IUPAC Name:
    Disodium 5-(acetylamino)-3-[(4-undecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    Constituent 3
    Reference substance name:
    Minor organic components
    Molecular formula:
    not applicable
    IUPAC Name:
    Minor organic components
    Constituent 4
    Reference substance name:
    inorganic salt
    Molecular formula:
    n.a.
    IUPAC Name:
    inorganic salt
    Constituent 5
    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

    Legal Entity Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    EC Number:
    239-893-9
    EC Name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    CAS Number:
    15792-43-5
    Molecular formula:
    C30H37N3Na2O8S2
    IUPAC Name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    Constituent 2
    Chemical structure
    Reference substance name:
    5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonic acid
    EC Number:
    297-750-6
    EC Name:
    5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonic acid
    CAS Number:
    93762-37-9
    Molecular formula:
    C30H39N3O8S2
    IUPAC Name:
    5-acetamido-3-((4-dodecylphenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonic acid
    Constituent 3
    Chemical structure
    Reference substance name:
    Disodium 5-(acetylamino)-3-[(4-undecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    Molecular formula:
    C29H35N3Na2O8S2
    IUPAC Name:
    Disodium 5-(acetylamino)-3-[(4-undecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    Constituent 4
    Chemical structure
    Reference substance name:
    5-acetamido-4-hydroxy-3-((4-undecylphenyl)diazenyl)naphthalene-2,7-disulfonic acid
    Molecular formula:
    C29H37N3O8S2
    IUPAC Name:
    5-acetamido-4-hydroxy-3-((4-undecylphenyl)diazenyl)naphthalene-2,7-disulfonic acid
    Constituent 5
    Chemical structure
    Reference substance name:
    Disodium 5-acetamido-3-((4-decylphenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonate
    Molecular formula:
    C28H33N3Na2O8S2
    IUPAC Name:
    Disodium 5-acetamido-3-((4-decylphenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonate
    Constituent 6
    Chemical structure
    Reference substance name:
    5-acetamido-3-((4-decylphenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonic acid
    Molecular formula:
    C28H35N3O8S2
    IUPAC Name:
    5-acetamido-3-((4-decylphenyl)diazenyl)-4-hydroxynaphthalene-2,7-disulfonic acid
    Constituent 7
    Chemical structure
    Reference substance name:
    Disodium 5-acetamido-4-hydroxy-3-((4-octylphenyl)diazenyl)naphthalene-2,7-disulfonate
    Molecular formula:
    C26H29N3Na2O8S2
    IUPAC Name:
    Disodium 5-acetamido-4-hydroxy-3-((4-octylphenyl)diazenyl)naphthalene-2,7-disulfonate
    Constituent 8
    Chemical structure
    Reference substance name:
    5-acetamido-4-hydroxy-3-((4-octylphenyl)diazenyl)naphthalene-2,7-disulfonic acid
    Molecular formula:
    C26H31N3O8S2
    IUPAC Name:
    5-acetamido-4-hydroxy-3-((4-octylphenyl)diazenyl)naphthalene-2,7-disulfonic acid
    Constituent 9
    Chemical structure
    Reference substance name:
    Disodium 5-acetamido-4-hydroxy-3-((4-tridecylphenyl)diazenyl)naphthalene-2,7-disulfonate
    Molecular formula:
    C31H39N3Na2O8S2
    IUPAC Name:
    Disodium 5-acetamido-4-hydroxy-3-((4-tridecylphenyl)diazenyl)naphthalene-2,7-disulfonate
    Constituent 10
    Chemical structure
    Reference substance name:
    5-acetamido-4-hydroxy-3-((4-tridecylphenyl)diazenyl)naphthalene-2,7-disulfonic acid
    Molecular formula:
    C31H41N3O8S2
    IUPAC Name:
    5-acetamido-4-hydroxy-3-((4-tridecylphenyl)diazenyl)naphthalene-2,7-disulfonic acid
    Constituent 11
    Reference substance name:
    Sum of unknown impurities, each < 1 %
    Molecular formula:
    not applicable
    IUPAC Name:
    Sum of unknown impurities, each < 1 %
    Constituent 12
    Chemical structure
    Reference substance name:
    Sodium chloride
    EC Number:
    231-598-3
    EC Name:
    Sodium chloride
    CAS Number:
    7647-14-5
    Molecular formula:
    ClNa
    IUPAC Name:
    Sodium chloride
    Constituent 13
    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:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    EC Number:
    239-893-9
    EC Name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    CAS Number:
    15792-43-5
    Molecular formula:
    C30H37N3Na2O8S2
    IUPAC Name:
    Disodium 5-(acetylamino)-3-[(4-dodecylphenyl)azo]-4-hydroxynaphthalene-2,7-disulphonate
    Constituent 2
    Reference substance name:
    Minor organic components
    Molecular formula:
    C30H37N3Na2O8S2
    IUPAC Name:
    Minor organic components
    Constituent 3
    Reference substance name:
    Sum of unknown components
    Molecular formula:
    not applicable
    IUPAC Name:
    Sum of unknown components
    Constituent 4
    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


    Composition(s) generated upon use

    Other types of composition(s)