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

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    4-Amino-1-naphthalenesulfonic acid
    Synonyms Sodium Naphthionate
    Structural formula
    Molecular weight 245.23
    Molecular Formula

    C10H8O3NSNa

    Descriptions

    1-Amino-4-naphthalene sulfonic acid sodium salt is a greyish-white crystal.The sodium salt of industrial products contains two or four crystal water. It changes slowly into a rose colour in air.It is easily soluble in water and soluble in 95% of alcohol.Its chief use is employed in organic pigments or the sythesis of intermediates of azo-dyes.

    Specification
    Index
    High grade
    1st grade
    Appearance
    Grayish white crystal
    Purity %min.
    75
    74
    1-Naphthylamine%max.
    0.02
    0.02
    Water insolubles %max.
    0.1
    0.2
    Packing extra grade Specification In plastic woven bag of 50kgs nett or 25kgs nett each with plastic lining
    Notes Put in dark,cold and air through place to prevent sun light.

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