|
| Item | USP/BP/EPCP | |
| Identification | Conforms | |
| pH | 5.0-8.0 | |
| Loss on drying (%) | ≤20 | |
| Residue on Ignition/ Sulfated ash (%) | ≤0.6 | |
| Iron (%) | ≤0.001 | |
| Oxidizing substances(%) | ≤0.002 | |
| Sulfur dioxide (%) | ≤0.005 | |
