CASR |
: | 144-55-8 |
Molecular Formula |
: | NaHCO3 |
Molecular Weight |
: | 84.01 |
| Specifications | |
|---|---|
| Appearance/Description: | White crystalline powder. |
| Solubility: | Soluble in water; insoluble in alcohol.Practically insoluble in ethanol (95%) |
| Identification (Sodium): | A dense precipitate should form. |
| Identification (Bicarbonate 1): | Effervesce with acids, evolves a colorless gas that when pass into calcium hydroxide solution produces white precipitate immediately |
| Identification (Bicarbonate 2): | A cold solution should be only slightly colored by phenolphthalein solution |
| Identification (By chemical test 1): | A pale pink color should produce. On heating gas should evolve and the solution become red |
| Identification (By chemical test 2): | white precipitate should form which dissolves on addition of an excess of hydrochloric acid. |
| Assay (on dried basis): | 99.0% - 100.5% |
| Appearance of solution: | Clear and colorless solution |
| Insoluble Substances: | The solution should be complete and clear |
| Normal carbonate: | The solution does not assume more than a faint pink color immediately. |
| Carbonate: | The pH of freshly prepared solution should not be greater than 8.6 |
| Chloride and Sulfate (Chloride): | NMT 0.015% |
| Limit of sulfur compound: | NMT 0.015% |
| Arsenic (As): | NMT 2ppm |
| Limit of Ammonia: | NMT 20 ppm |
| Calcium (Ca): | NMT 100ppm |
| Iron (Fe): | NMT 20ppm |
| Loss on drying: | NMT 0.25% |
