| Synonyms | Acid sodium sulphate; Sodium bisulphate; Nitre cake |
| Definition |
|---|
| Chemical name | Sodium hydrogen sulphate |
| Chemical formula | NaHSO4 |
| Molecular weight | 120,06 |
| Assay | Content not less than 95,2 % |
| Description | White, odourless crystals or granules |
| Identification |
|---|
| Test for sodium | Passes test |
| Test for sulphate | Passes test |
| pH | Solutions are strongly acidic |
| Purity |
|---|
| Loss on drying | Not more than 0,8 % |
| Water insoluble matter | Not more than 0,05 % |
| Selenium | Not more than 30 mg/kg |
| Arsenic | Not more than 3 mg/kg |
| Lead | Not more than 2 mg/kg |
| Mercury | Not more than 1 mg/kg |