Listing ID #819428
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| Test | Specifications |
|---|---|
| Characters | A white or almost white, slightly granular powder, hygroscopic, freely soluble in water, practically insoluble in ethanol (96%). |
| Identification A) By Chemical. B) The reaction of ‘Carbonates’. C) The reaction (a) of ‘Sodium’. D) Loss on drying |
A) The solution is strongly alkaline. B) A white precipitate is formed that dissolves on addition of an excess of hydrochloric acid C) A dense white precipitate is formed. D) It complies with the test. |
| Appearance of solution | The solution is clear. |
| Alkali hydroxides and bicarbonates | Complies |
| Chlorides | Not more than 125 ppm. |
| Sulphates | Not more than 250 ppm. |
| Arsenic | Not more than 5 ppm. |
| Iron | Not more than 50 ppm. |
| Heavy metals | Not more than 50 ppm. |
| Loss on Drying | Not more than 1.0% w/w, 1.0 g at 300 ± 15 °C. |
| ASSAY (By Titrimetry) | Not less than 99.5% w/w and not more than the equivalent of 100.5% w/w of Na2CO3, on dried basis. |
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