| Synonyms | Tribasic potassium citrate |
| Definition |
|---|
| Einecs | 212-755-5 |
| Chemical name | Tripotassium citrate; Tripotassium salt of 2-hydroxy-1,2,3-propanetricarboxylic acid; Monohydrated tripotassium salt of citric acid |
| Chemical formula | C6H5O7K3·H2O |
| Molecular weight | 324,42 |
| Assay | Content not less than 99 % on the anhydrous basis |
| Description | White, hygroscopic, granular powder or transparent crystals |
| Identification |
|---|
| Test for citrate | Passes test |
| Test for potassium | Passes test |
| pH | Between 7,5 and 9,0 (5 % aqueous solution) |
| Purity |
|---|
| Loss on drying | Not more than 6,0 % (180 °C, 4 hours) |
| Oxalates | Not more than 100 mg/kg (expressed as oxalic acid, after drying) |
| Arsenic | Not more than 1 mg/kg |
| Lead | Not more than 1 mg/kg |
| Mercury | Not more than 1 mg/kg |