| Description |
Colourless crystals or a white, crystalline powder
|
Solubility |
Very soluble in boiling water, freely soluble in water, practically insoluble in ethanol (95%)
|
| Identification |
-
|
Identification 'A' |
It should give the reactions of sulphates
|
| Identification 'B' |
It should give reaction (A) of magnesium salts
|
Appearance of solution |
Solution should be clear and colorless
|
| Acidity or alkalinity |
Not more than 0.2 ml of either 0.01M hydrochloric acid or 0.01 M sodium hydroxide should require to change the colour of the solution
|
Arsenic |
NMT 2 ppm
|