| Description |
White, granular crystals or a white, crystalline powder
|
Solubility |
Freely soluble in water; practically insoluble in ethanol (95%) and in ether
|
| Identification |
Solution A should gives the reaction of sodium salts and reactions of citrates
|
Appearance of solution |
Solution A should be clear and colourless
|
| Acidity or alkalinity |
Not more than 0.5 ml of 0.05 M sulphuric acid or of 0.1 M sodium hydroxide should required
|
Arsenic |
NMT 2 ppm
|
| Sulphates |
NMT 150 ppm
|
Tartrates |
No crystalline precipitate should be formed
|
| Readily carbonisable substance |
The solution is not more intensely colured than reference solution YS2 OR GYS2
|
Water |
11.0 to 13.0 %
|
| Assay (on anhydrous basis) |
99.0 – 101.0%
|