1-Amino-2-Naphthol-4-Sulfonic Acid CAS 116-63-2
1-Amino-2-Naphthol-4-Sulfonic Acid CAS 116-63-2 4-Amino-3-Hydroxy-1-Naphthalenesulfonic Acid is colorless hygroscopic crystal appearance. Insoluble in cold water, ethanol, ether, benzene, soluble in hot water, hot sodium bisulfite and alkali solution. It is mainly used in the manufacture of azo dyes