1 | Description | White, crystalline powder. | White, crystalline powder or granules. |
2 | Solubility | Complies | Very soluble in boiling water; freely soluble in water. |
3 | Identification A (By Chemical test) | Complies | A dense precipitate should form. |
4 | Identification B1 (Carbonate) | Complies | Effervesce with acids, evolves a colorless gas that when pass into calcium hydroxide solution produces white precipitate immediately |
5 | Identification B2 (Carbonate) | Complies | A cold solution should be colored red by phenolphthalein solution |
6 | Assay (Anhydrous basis) | 99.8% | 99.5% - 100.5% |
7 | Water | 0.3% | NMT 0.5% |