| ? | STANDARD | |
| ITEM | GB8273-2008 | FCCV |
| Exterior | White or a slightly yellow crystalline pellet or powder | White,odorless,crystalline powder or granules |
| Assay | ＞98.0% | 98.0%-100.5% |
| Specific Rotation | +95.5°~+98.0° | +95.5°~+98.0° |
| Clarity | Up to STANDARD | Up to STANDARD |
| PH | 5.5-8.0 | 5.5-8.0 |
| Heavy Metal(Pb) | ＜0.002% | ＜0.001% |
| Lead | ---- | ＜0.0005% |
| Arsenic | ＜0.0003% | ＜0.0003% |
| Oxalatc | Up to STANDARD | Up to STANDARD |
| Indentification | ----- | Passed test |
| Loss on drying | ------ | =<0.25% |