1 | Appearance | White crystalline powder, slightly deliquescent in moist air | White or almost white, crystalline powder or white or almost white, granular crystals, slightly deliquescent in moist air. |
2 | Solubility | Passes | Freely soluble in water, practically insoluble in ethanol (96%) |
3 | Identification A (By Chemical test) | Complies | Solution S is gives the reaction of citrates. |
4 | Identification B (By Chemical test) | Complies | Solution S gives reaction (a) of sodium. |
5 | Appearance of Solution | Complies | Solution A is clear and colourless. |
6 | Acidity or alkalinity | Complies | Not more than 0.2ml of 0.1 M hydrochloric acid or 0.1 M sodium hydroxide is required. |
7 | Readily carbonizable substances | Complies | The solution is not more intensely coloured than reference solution Y2 or GY2. |
8 | Chlorides | NMT 50ppm | 50ppm max |
9 | Oxalate | NMT 300ppm | 300ppm max |
10 | Sulphate (SO4) | NMT 150ppm | 150ppm max |
11 | Water | 11.69% | 11.0% -13.0% |
12 | Assay (Anhydrous basis) | 99.31% | 99.0%-101.0% |