H Acid
| Generic Name | Colour Index Hue |
|---|---|
| Synonyms |
1-Amino-8-Naphtol-3,6 Disulfonic Acid (Sodium Salt) 8-Amino-1-Naphtol-3,6 Disulfonic Acid (Sodium Salt) 1-Amino-8-Hydroxynaphthalene-3,6-Disulfonic Acid Mono Sodium Salt 4-Amino-5-Hydroxynaphthalene-2,7-Disulfonic Acid Mono Sodium Salt |
| Empirical formula | C H O NS 10 9 7 2 (Free Acid mw 319) C H O NS NA 10 9 7 2 (Mono Sodium Salt mw 341) |
| CAS-No. | 5460-9-3 |
| Appearance | off-white to light grey powder. |
| Strength | 80.00 % min. (on mw 319) 85.00 % min. (on mw 341) |
| Insoluble Matter in Dilute Soda Ash Sol. | 0.10 % max. on 100 % |
| Impurities | Chromotropic acid - 0.8 % max. on 100 %
Koch acid - 0.2 % max. on 100 % Omega acid - 0.2 % max. on 100 % |
| Sales Basis | On 100 % (Real Weight.) |
| Use | Intermediate for dyestuffs. |
