1 | Description | A clear, colourless, volatile liquid. | A crystalline mass or clear, colourless,volatile liquid. |
2 | Solubility | Complies | Miscible with water, with ethanol (95%) with methylene chloride with ether. |
3 | Identification A (By Chemical test) | Complies | A 10% w/v solution should be strongly acidic. |
4 | Identification B (By Chemical test) | Complies | Blue precipitate or dark blue colour should produce |
5 | Freezing point | 15.0°C | NLT 14.8° C. |
6 | Residue on evaporation | 0.0015% | NMT 0.01% |
7 | Reducing substances | Complies | Not less than 1.0 ml of 0.1M sodium thiosulphate should require. |
8 | Heavy metals | Less than 5 ppm | NMT 5 ppm |
9 | Iron (Fe) | Less than 5 ppm | NMT 5 ppm |
10 | Chloride (Cl) | Less than 25 ppm | NMT 25 ppm |
11 | Sulphate (SO4) | Less than 50 ppm | NMT 50 ppm |
12 | Assay | 99.8% | Not less than 99.0% w/w - Not more than 100.5% w/w. |