1-Naphthylamine-4-sulfonic acid sodium salt( Sodium Naphthionate 74% min)

1)-Naphthylamine-4-Sulfonate 1>Total amino:75.0%min 2> 1-naphthly-amine: 0.02% max 3> water insoluble matter: 0.1% max

We are Dyes manufacture,

We produce the Sodium Naphthionate ,and then use it to produce dyes such as Acid red A/B,acid red 3R,direcr red G,Direct red 4BE(Congo red),direct red GB,direct red B,direct green 2GN

Sodium Naphthionate 4-Amino-1-naphthalenesulfonic acid CAS 130-13-2 %74 min1, Best quality & competitive price2, ISO 9001-2008 cerificate manufacture3, We are the dyes manufacture 

4-Amino-1-naphthalenesulfonic acid

Synonyms Sodium Naphthionate 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.

1-Naphthylamine-4-sulfonic acid sodium salt( Sodium Naphthionate 74% min)