1 | Appearance | Almost white crystalline powder | White or almost white, crystalline powder |
2 | Solubility | Passes | Freely soluble in water, sparingly soluble or soluble in ethanl (96%), practically insoluble in methylene chloride. |
3 | Identification A (By Melting point) | 115° C | 103°C to 115°C |
4 | Identification B (By IR) | Complies | To comply the test |
5 | Identification C | Complies | Gives reaction (a) of sulphates |
6 | Identification D | Complies | Solution S gives reaction (a) of sodium |
7 | Appearance of solution | Passes | Solution S is not more opalescent than reference suspension II and not more intensely coloured than refrence solution B6 |
8 | pH | 7.12 | 6.0 to 8.0 |
9 | Inorganic mercuric compounds | NMT 0.70% | 0.70% max |
10 | Loss on drying | 0.47% | 0.5% max |
11 | Assay (Dried substance) | 98.06% | 97.0% to 101.0% |