| Tests | | Specifications | | Reference |
| Description
| | White, odourless, crystalline powder
| | USP |
| | | | |
| Solubility
| | Slightly soluble in water; Freely soluble in diluted 3N HCl acid and diluted 2N nitric acid, insoluble in alcohol
| | USP |
| | | | |
| Identification | | | | USP |
| | | | |
| A.Test A
| | Shall pass the test | | USP |
| | | | |
| B.Test B
| | Shall pass the test | | USP |
| | | | |
| Loss on drying
| | Between 10.0% and 13.3%
| | USP |
| | | | |
| Arsenic
| | Max. 3 µg / g
| | USP |
| | | | |
| Limit of fluoride | | Max. 0.003% | | USP |
| | | | |
| Limit of acid – insoluble substances | | Max. 0.2% | | USP |
| | | | |
| Lead
| | Max. 0.001%
| | USP |
| | | | |
| Heavy metals
| | Max. 0.002%
| | USP |
| | | | |
| Assay as Ca3 (C6H5O7) 2 on dry basis | | 97.5% - 100.5% | | USP |
| | | | |
| | |
| Storage: | | Store in a well-closed container at a temperature not exceeding 25°C, protected from direct sunlight and
Moisture, unless otherwise specified. |
| | |
| Retest Period: | | 3 years from the date of manufacture. |
| | |