2 Amino 5 Naphthol 7 Sulfonic Acid

We are offering 2 amino 5 naphthol 7 sulfonic acid, j acid（2-amino-5-naphthol-7-sulfonic acid） the dry of j-acid is grey powder, difficultly soluble in water. Easily soluble alkali-creating correspondence salt. The liquid of its’ sodium salt is blue fluorescence. It’s the chlorine compound of j acid is acicular yellow crystal, soluble in water, can be coupled to purple dyes by itself when in the sodium carbonate solution.