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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