FOB Price
Obtenir le dernier prix0 ~ 10000
|Minimum Order
Localité:
China
Prix de commande minimale:
-
Commande minimale:
1 Metric Ton
Packaging Detail:
50kg bags
Delivery Time:
5~25 days
Supplying Ability:
2000 Metric Ton per Month
Payment Type:
T/T, L/C, Other
Personne àcontacter Emily
Shanghai, Shanghai
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| H-Acid（MW**1） |  |
| 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.
