1 | Description | A white crystalline powder; odourless; hygroscopic | A white , crystalline powder or fragments or granules; odourless; hygroscopic. |
2 | Solubility | Complies | Freely soluble in water, soluble in ethanol (95%). |
3 | Identification A (Calcium1) | Complies | A white, crystalline precipitate should form. |
4 | Identification A (Calcium 2) | Complies | A white precipitate that sparingly soluble in dilute acetic acid but soluble in hydrochloric acid should form. |
5 | Identification B (Chloride) | Complies | A curdy white precipitate insoluble in dilute nitric acid but soluble in dilute ammonia should form. |
6 | Appearance of solution | Complies | Solution should be clear and not more intensely coloured than the reference solution YS6. |
7 | Acidity or Alkalinity | Complies | Not more than 0.2 mL of 0.01M sodium hydroxide or 0.01M of hydrochloric acid should require. |
8 | Arsenic | Less than 3 ppm | NMT 3 ppm |
9 | Aluminium and phosphate | Complies | No turbidity or precipitate should form. |
10 | Barium(Ba) | Complies | A solution should not be more opalascent than standard. |
11 | Heavy metals | Less than 10ppm | NMT 10ppm |
12 | Iron(Fe) | Less than 20ppm | NMT 20ppm |
13 | Magnesium and alkali salts | 0.51% | NMT 1.0% |
14 | Sulfates | Less than 300ppm | NMT 300 ppm |
15 | Assay | 97.8% | 97.0% - 103.0% |