CASR |
: | 497-19-8 |
Molecular Formula |
: | Na2CO3 |
Molecular Weight |
: | 105.99 |
| Specifications | |
|---|---|
| Appearance: | 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 be strongly alkaline. |
| Identification B (carbonate): | A white precipitate should form that dissolves on addition of an excess of hydrochloric acid |
| Identification C (for Sodium): | A dense white precipitate should form. |
| Identification D (By Loss on drying): | NMT 1.0% |
| Appearance of solution: | The solution should be clear and not more intensely colored than reference solution Y6. |
| Alkali hydroxides and bicarbonates: | The solution should remain clear. |
| Chlorides: | NMT 125 ppm |
| Sulfates: | NMT 250 ppm |
| Arsenic (As): | NMT 5 ppm |
| Iron (Fe): | NMT 50 ppm |
| Loss on drying: | NMT 1.0% |
| Assay (Dried substance): | 99.5% - 100.5% |
