• Mainly produces a series of intermediate products based on naphthalene and benzene

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    Diazo 1,2,4 Acid
    Synonyms 1-Diazo-2-Naphthol-4-Sulphonic acid or 4-Diazo-3-hydroxy-naphthalene-1-sulphonic acid
    Stuctural formular
    CAS no 4857-47-0
    Molecular weight 250
    Molecular Formula

    C10H6N2O4S

    Specification
    Index
    Common specification
    Appearance
    Yellow to light brown moist material
    Purity %min.
    75
    Content by HPLC %min.
    95
    Insolubles %max.
    0.1
    Free acid (H2SO4) %max.
    2
    Fe mg/kg max.
    30
    Uses It is an important component in azo dyes for
    A)After chroming, Mordant black-3, Mordant black-17, Mordant red-7
    B)Pre-formed 1:1 metal complex dyes like Acid blue 155,Acid blue 158, Acid blue 158:1, Acid blue 161, Acid red 186, Acid red 201
    C)Pre-formed 2:1 metal complex dyes like Acid blue 193, Acid violet 90, Acid violet 92
    Packing In HDPE woven sacks with poly liner or in M.S. drums of 50kg to 170kg.

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    Add:Room 401-418, Building 18, Changjiang Plastics Chemical Market, 600 Tongjiang Middle Road, Xinbei District, Changzhou City
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