CASR |
: | 497-19-8 |
Molecular Formula |
: | Na2CO3 |
Molecular Weight |
: | 105.99 |
| Specifications | |
|---|---|
| Appearance: | A white or almost white, slightly granular powder,hygroscopic. |
| Solubility: | Freely soluble in water, practically insoluble in ethanol (96%). |
| Identification A (By Chemical test): | The solution should strongly alkaline. |
| Identification B (carbonate): | A white precipitate should form that dissolves on addition of an excess of hydrochloric acid. |
| Identification C (Sodium): | A dense white precipitate should form. |
| Identification D (By Loss on drying): | 1.0% max |
| Appearance of solution: | The solution is clear and not more intensely coloured than reference solution Y6 |
| Alkali hydroxides and bicarbonates: | The solution should remain clear. |
| Chlorides: | NMT 125ppm |
| Sulfates: | NMT 250ppm |
| Arsenic (As): | NMT 5ppm |
| Iron (Fe): | NMT 50ppm |
| Loss on drying: | 1.0% max |
| Assay (Dried substance): | 99.5% - 100.5% |
