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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