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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