1 | Appearance | A white powder, hygroscopic | A white or almost white powder, hygroscopic |
2 | Solubility | Complies | Soluble in water, practically insoluble in ethanol (96%). |
3 | Identification A (By Chemical test) | Complies | Solution should slightly alkaline. |
4 | Identification B (By Loss on drying) | 0.3% | NMT 1.0% |
5 | Identification C (By Chemical test) | Complies | A yellow color should develop |
6 | Identification D (By Chemical test) | Complies | A dense white precipitate should form. |
7 | Appearance of solution | Complies | Solution should be clear and colorless. |
8 | Reducing substances | Complies | The colour of the permanganate should not be completely discharge |
9 | Monosodium Phosphate | Less than 2.5% | NMT 2.5% |
10 | Chlorides | Less than 200ppm | NMT 200ppm |
11 | Sulphate (SO4) | Less than 500ppm | NMT 500ppm |
12 | Iron(Fe) | Less than 20ppm | NMT 20ppm |
13 | Loss on drying (105 °C, 4 hr) | 0.3% | NMT 1.0% |
14 | Assay (Dried substance) | 99.8% | 98.0% - 101.0% |