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

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        PRODUCTS

        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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