| Item | Specification | Test Results |
| Appearance | White powder | Conform |
| Assay (Dry Basis) | 98.0%--102.0% | 100.98% |
| Specific Optical | -2.4°~ -2.8° | -2.71° |
| PH | 4.5~7.0 | 5.3 |
| Heavy Metals (As Pb) | ≤10ppm | <10ppm |
| As | ≤1ppm | Not Detected |
| Pb | ≤0.5ppm | Not Detected |
| Cd | ≤1ppm | Not Detected |
| Hg | ≤0.1ppm | Not Detected |
| Related substance | Spot not bigger than standard solution spot |
No spot |
| Residual solvent | <0.5% | Complies |
| Water Content | <2% | 0.18% |
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