Complaint
| Items | Standard | Result | Method |
| Appearance | Ice solid | Ice solid | visualization |
| Melting point (ºC) | >30 | 32 | DSC |
| Assay (w/w %) | > 95% | > 98% | 100−sum of impurities |
| Chlorosulfonic Acid(ppm) | < 800 | 637.62 | IC |
| Free Acid(ppm) | < 100 | 74.38 | Acid-base neutralization |
| Cl- (ppm) | < 100 | 59.62 | IC |
| Conclusion | Qualified. | ||
Items | Standard | Result |
Appearance | White to off-white powder | White powder |
Assay (W/W dry basis) | ≥98.0% | 99.16 % |
Residue on ignition | <0.5% | 0.256% |
Water (w/w by KF) | ≤1.0% | 0.420% |
pH Value(1% aq.) | 5~9 | 7.28 |
