Package: 25 kgs bag

Uses : Mainly used in the producting acid,direct and reactive dye,also applied in medicine.

Molecular Structure:

Product description: H Acid 4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid 1-Amino-8-Hydroxynaphthalene-3,6-Disulphonic Acid Molecular formula: C10H9NO7S2 Molecular weight: 319.31 CAS: 90-20-0 EINECS: 201-975-7 Appearance: white powder Specification: H-acid mono sodium salt (total amino value): 85.0% min H-acid mono sodium salt (HPLC): 97.0% min Chromotropic acid disodium salt:1.5% T-acid disodium salt: 0.5% ω-acid disodium salt: 0.5% Moisture: 5.0% Insoluble: 0.2% Properties: slightly dissolves in water, can dissolve in the sodium carbonate solution.Dilute the H-acid monosodium salt will present blue and red fluorescent light.Reacts with the nitrous acid will turn into the yellow crystalline diazo compound.Reacts with the ferric chloride presents reddish brown;it is red and purple when dissolves in the sodium carbonate solution;dark green in saline solution,apt to dissolves in hot water. Application: Mainly used in the producting acid,direct and reactive dye,also applied in medicine. Packing: 25 kg bag