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Company Profile

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Hangzhou Xcolor Imp./Exp. Co., Ltd
[China]

Address:
Jincheng Rd, Xiaoshan, Hangzhou, Zhejiang, China Hangzhou Zhejiang 311200 China

Phone:
86-571-83885288

Contact name:
Rachel Young , Sales Manager

Hangzhou Xcolor Imp./Exp. Co., Ltd

Products

	H Acid

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Product Name Appearance MP Assay
H-ACID(DRY POWDER) white powder 85%
H-ACID(DRY POWDER) white paste 42%

1-Amino 8-naphthal, 3,6-disulphonic Acid

Structural Formula:
Molecular Formula: C10H8O7NS2Na
Molecular Weight: 341.3

Physical and Chemical Properties:

(1)the solubility in water is 0.17% (20°C);

(2)the solubility in water is 2.40% (60C°C);

(3)insoluble in alcohol and aether;

(4)soluble in solutions of alkali, sodium carbonate and ammonia;

(5)the dilute solutiono f 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, appears dark green when dissolving in alkali solution.