|
| Item | USP/BP/EP | CP |
| Identification | Conforms | |
| pH | 4.0-7.0 | 4.5-7.0 |
| Loss on drying (%) | ≤15 | ≤14 |
| Residue on Ignition/ Sulfated ash (%) | ≤0.6 | ≤0.6 |
| Iron(%) | ≤0.001 | ≤0.001 |
| Oxidizing substances(%) | ≤0.002 | ≤0.002 |
| Sulfur dioxide (%) | ≤0.005 | ≤0.004 |
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