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 | Complies | Freely soluble in water, practically insoluble in ethanol (96%) |
3 | Identification A (Citrate) | Complies | Solution should produce violet colour turning to violet blue |
4 | Identification B (Test for Sodium) | Complies | A dense white precipitate should form. |
5 | Appearance of Solution | Complies | Clear and colourless solution |
6 | Acidity or alkalinity | Complies | Not more than 0.2ml of 0.1 M hydrochloric acid or 0.1 M sodium hydroxide is required to change the colour of the indicator. |
7 | Readily carbonizable substances | Complies | The solution is not more intensely coloured than reference solution Y2 or GY2. |
8 | Chlorides | Less than 50ppm | NMT 50ppm |
9 | Oxalate | Less than 300ppm | NMT 300ppm |
10 | Sulphate (SO4) | Less than 150ppm | NMT 150ppm |
11 | Water | 11.7% | 11.0% -13.0% |
12 | Assay (Anhydrous basis) | 100.2% | 99.0%-101.0% |