CASR |
: | 87-69-4 |
Molecular Formula |
: | C4H6O6 |
Molecular Weight |
: | 150.09 |
| Specifications | |
|---|---|
| Description: | Colourless crystals or a white or almost white crystalline powder. |
| Solubility: | Very soluble in water, freely soluble in ethanol (95%) |
| Identification A (By Chemical test): | On ignition gradually decomposes giving off an odour resembling that of burnt sugar |
| Identification B (By Chemical test): | Solution should be strongly acidic |
| Identification C (Tartrate A): | An intense violet or purple colour should produced. |
| Identification C (Tartrate B): | A dark blue colour that changes to red when the solution is cooled and poured into water is produced. |
| Appearance of solution: | Solution should be clear, and not more intensely coloured than reference solution YS6. |
| Specific optical rotation: | +12.0° to +12.8° |
| Arsenic (As): | NMT 2ppm |
| Heavy metals: | NMT 10ppm |
| Chlorides: | NMT 125ppm |
| Sulphate (SO4): | NMT 150ppm |
| Oxalate: | No opalescence should produce within 20 minutes |
| Sulphated ash: | NMT 0.1% |
| Loss on drying: | NMT 0.2% |
| Assay (on dried basis): | 99.5% - 101.0% |
