CASR |
: | 497-19-8 |
Molecular Formula |
: | Na2CO3 |
Molecular Weight |
: | 105.99 |
| Specifications | |
|---|---|
| Description: | A white or almost white, slightly granular powder,hygroscopic. |
| Solubility: | Freely soluble in water; practically insoluble in ethanol (95%). |
| Identification A (By Chemical test): | The solution should be strongly alkaline. |
| Identification B (carbonate): | A white precipitate that dissolves on addition of excess dilute hydrochloric acid should form. |
| Identification B (Sodium A): | A dense white precipitate should form. |
| Identification B (Sodium B): | No precipitate should form. |
| Appearance of solution: | The solution should be clear and not more intensely colored than reference solution YS6. |
| Alkali hydroxides and bicarbonates: | The solution remains clear. |
| Heavy metals: | NMT 50ppm |
| Iron (Fe): | NMT 50ppm |
| Chlorides: | NMT 125ppm |
| Sulfates: | NMT 250ppm |
| Loss on drying,300°C: | NMT 1.0% |
| Assay (on dried basis): | 99.5% - 100.5% |
