H Acid CAS: 90-20-0 Dye Intermediate

Description

 

H-Acid（MW**1）	Â
Â	Â
Name of standard	Standard
Appearance	gray powder
Purity %	≥*5.*0
Insolubles %	≤0.*0
Moisture %	≤5.*0
HPLC %	≥*7.*0
Chromo Acid	≤1.*0
T-Acid %	≤0.*0
w-Acid %	≤0.*0
K-Acid %	≤0.*0

Properties :

Physical and Chemical Properties:

(1)the solubility in water is 0.*7% (*0°C);
(2)the solubility in water is 2.*0% (*0C°C);
(3)insoluble in alcohol and aether;
(4)soluble in solutions of alkali, sodium carbonate and ammonia;
(5)the dilute solution of H-acid appears blue red fluorescence;
(6)H-acid can couple in both acid and alkali condition;
(7)a. the alkali solution of H-acid fast becomes dark in air; b. to produce yellow crystalline diazo compound when reacting with nitrous acid; c. diazo compounds are soluble in soda and alkali solution; d. appears light violet when dissolving in soda solution, e. appears dark green when dissolving in alkali solution.

Shanghai River Chemical Co., Ltd. is one of the joint-stock Co., Ltd. a large enterprise with a registered capital of **0 million, mainly engaged in chemical raw materials, pharmaceutical, pesticide, intermediates and fine chemical products import and export companies. Companies active in domestic and foreign trade, OEM production and processing mode, entrepot trade and other operations, customers throughout the world, the growing size of the company. Uphold the integrity and pragmatic, pragmatic business philosophy, and strive to fast, healthy development of the company in the future.

H Acid(*-Amino**-hydroxynaphthalene*3,*-disulphonic acid)
 
CAS: ******0
Molecular Formula: C*0H8O7NS2Na
Molecular Weight/Mass: **1.3

Application: for the manufacture of azo dye, for dying wool, paper and cotton, may also be used for synthesis of pharmaceutical.