Pure sodium carbonate is a white, odorless powder that is hygroscopic (absorbs moisture from the air). It has a strongly alkaline taste, and forms a moderately basic solution in water. Sodium carbonate is well known domestically for its everyday use as a water softener.
- Cas No:
- 497-19-8
- Formula:
- Na2CO3
- Molecular Weight:
- 105.99
- Character:
- White or almost white, slightly granular powder, hygroscopic, freely soluble in water, practically insoluble in ethanol (96%)
- Packaging:
- 50 Kg. HDPE bags with polyliner inside.
- Storage:
- In air tight container.
Available Grade & Specification
| Item | BP | USNF | FCC | ACS Grade |
|---|---|---|---|---|
| Assay | 99.5% to 110.5% (Dried substance) |
99.5% - 100.5% Anhydrous basis | 99.5% – 100.5% as Na2CO3 offer | 99.5% Na2CO3 minimum dried basis |
| Identification | Positive | Positive | Positive | |
| Appearance of solution | Complies test | |||
| Alkali Hydroxide of bicarbonates | Complies test | |||
| Chloride | 125 PPM Max | 0.001% Max | ||
| Sulphate | 250 PPM Max | 0.003% Max | ||
| Arsenic | 5 PPM Max | 5 PPM Max | ||
| Heavy Metals | 50 PPM Max | 0.001% Max | 4 PPM Max | 5 PPM Max |
| Organic volatile impurities | Meets the requirement | |||
| Water | 1.0% Max | NMT 0.5% Max | NMT 1.0% Max | 1.0 % Max |
| Insoluble matter | 0.01% | |||
| Nitrogen compound as(N) | 0.001% Max | |||
| Phosphate(PO4) | 0.001% Max | |||
| Silica(SiO4) | 0.005% Max | |||
| Ammonium hydroxide precipitate | 0.01% Max | |||
| Calcium & Magnesium precipitate | 0.01%Max | |||
| Potassium | 0.005% | |||
| Iron | 50 PPM Max | 5 PPM Max |