1 | Appearance | White, crystalline powder | White or almost white, crystalline powder |
2 | Solubility | Complies | freely soluble in water, sparingly soluble or soluble in ethanol (96%), practically insoluble in methylene chloride |
3 | Identification A (By Melting point) | 108°C | 103°C -115°C |
4 | Identification B (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the corresponding standard |
5 | Identification C (Mercury) | Complies | The spot should disappear. |
6 | Identification C (Sulfate) | Complies | A white precipitate should form |
7 | Identification D (By sodium) | Complies | A dense white precipitate should form. |
8 | Appearance of solution | Complies | Solution should not be more opalescent than reference suspension II and not more intensely coloured than reference solution B6 |
9 | pH | 6.26 | 6.0 - 8.0 |
10 | Inorganic mercury compounds | 0.53% | 0.70 % max. |
11 | Loss on drying | 0.3% | 0.5% max. |
12 | Assay | 98.5% | 97.0% - 101.0% |