1 | Description | Colourless, transparent crystals, very efflorescent. | Colourless, transparent crystals, very efflorescent |
2 | Solubility | Complies | Freely soluble in water, practically insoluble in ethanol (96%) |
3 | Identification (Phosphate 1) | Complies | A light yellow precipitate should form, the color of which should not change by boiling and readily soluble in 10M ammonia and in dilute nitric acid |
4 | Identification (Phosphate 2) | Complies | white crystalline precipitate should form |
5 | Identification (Phosphate 3) | Complies | A bright yellow precipitate should form |
6 | Identification (Sodium 1) | Complies | A dense white precipitate should form |
7 | Identification (Sodium 2) | Complies | No precipitate should form |
8 | Identification (By Loss on drying) | 60.9% | 57.0% - 61.0% |
9 | Identification (By Chemical test) | Complies | Solution S is slightly alkaline |
10 | Appearance of solution | Complies | Solution is clear and colourless. |
11 | Reducing substances | Complies | The red colour is not completely discharged |
12 | Sodium dihydrogen phosphate | Less than 0.025 | NMT 0.025 |
13 | Chlorides | Less than 200ppm | NMT 200ppm |
14 | Sulphate (SO4) | Less than 500ppm | NMT 500ppm |
15 | Arsenic (As) | Less than 2ppm | NMT 2ppm |
16 | Iron(Fe) | Less than 20ppm | NMT 20ppm |
17 | Heavy metals | Less than 10ppm | NMT 10ppm |
18 | Loss on drying | 60.9% | 57.0% - 61.0% |
19 | Assay (Dried basis) | 98.8% | 98.5% - 102.5% |
20 | Total aerobic microbial count | Less than 1000 CFU/gm | NMT 1000 CFU/gm |
21 | Total combined yeast and molds count | Less than 100 CFU/gm | NMT 100 CFU/gm |
22 | Bacterial endotoxin test | Less than 2.5 EU/gm | 2.5 EU/gm |