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H Acid
 H Acid |
Product Description
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.
Main Uses: Used to produce all kinds of azo dyes, used to dye wools, textiles, papers and paper textiles; Also used to synthesize pharmaceutical.
ITEMS | STANDARD |
Purity (Mol Wt.319) | ≥ 80% |
Insolubles | ≤ 0.20% |
Moisture | ≤ 5.0% |
HPLC value | ≥ 97% |
Chromo acid | ≤ 1.50% |
T acid | ≤ 0.20% |
ω -Acid | ≤ 0.50% |
K-acid | ≤ 0.50% |
Appearance | Grey white powder |
| Company: | Zhejiang Huate Group |
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