Complaint
| Item | Specific | Result |
| Appearance | Type white to yellow powder | Pale yellow powder |
| Solubility | Soluble in water,no visible evidence of contamination of foreign matter | Conforms |
| Identification | IR spectra is consistent with CRS. | Conforms |
| The retention time of the major peak of the assay preparation corresponds to that of the standard preparation, as obtained in the assay. | Conforms | |
| Positive in phosphate test | Conforms | |
| PH | 5.0-8.0 | 7.3 |
| Water | 5.0%max | 1.4% |
| Cis-isomer | 82-88% | 86.0% |
| Trans-isomer | 12-18% | 14.0% |
| Heavy metal | 30ppm max | Conforms |
| Assay | 75%min | 77.2% |
| Conclusion | Conform to In-house standard | |
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 |
