| Synonyms | Sodium bicarbonate, sodium acid carbonate, bicarbonate of soda, baking soda |
| Definition | |
| Chemical name | Sodium hydrogen carbonate |
| Einecs | 205-633-8 |
| Chemical formula | NaHCO3 |
| Molecular weight | 84,01 |
| Assay | Content not less than 99 % on the anhydrous basis |
| Description | Colourless or white crystalline masses or crystalline powder |
| Identification | |
A.Positive tests for sodium and for carbonate | |
B.pH of a 1 % solution | Between 8,0 and 8,6 |
C.Solubility | Soluble in water. Insoluble in ethanol |
| Purity | |
| Loss on drying | Not more than 0,25 % (over silica gel, 4h) |
| Ammonium salts | No odour of ammonia detectable after heating |
| Arsenic | Not more than 3 mg/kg |
| Lead | Not more than 5 mg/kg |
| Mercury | Not more than 1 mg/kg |
