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Specifications
Clarity of solution | A 10% solution in water is clear, appendix 6.1. |
Chlorides | Not more than 330 ppm |
Sulphate | Not more than 0.12% |
Water | Not more than 5.0% |
Assay on dried basis | As C10H11NaO3) |
Additional Test | Loss on drying, w/w |
PH | Between 9.5 to 10.5, determined in a 0.1% w/v solution, appendix 8.11 |
Description : A white, crystalline powder, odourless or almost odourless; hygroscopic.
Solubility : Freely soluble in water and in ethanol (50%), sparingly soluble in ethanol (95%), practically in soluble in fixed oils.
Identification :