1 | Appearance | White crystalline powder, slightly hygroscopic. | White or almost white, crystalline powder or transparent crystals, slightly hygroscopic. |
2 | Solubility | Passes | Very soluble in water, soluble in alcohol, practically insoluble methylene chloride. |
3 | Identification A (By Melting point) | 133°C | 132°C - 135°C |
4 | Identification B (By IR) | Complies | To comply the test |
5 | Identification C (By Chemical test) | Complies | A white, crystalline precipitate is produced. |
6 | Identification D (By Chemical test) | Complies | A reddish violet colour is produced |
7 | Appearance of solution | Complies | The solution is clear and colourless. |
8 | Alkalinity | Passes | The solution is red to orange. |
9 | Biuret | NMT 0.1% | 0.1% max |
10 | Ammonium (NH4) | NMT 500 ppm | 500ppm max |
11 | Heavy metals | NMT 10ppm | 10ppm max |
12 | Loss on drying,105°C | 0.60% | 1.0% max |
13 | Sulphated ash | 0.09% | 0.1% max |
14 | Assay (Dried substance) | 98.75% | 98.5% - 101.5% |