| Item | Standard |
| Appearance | White or off white crystalline powder |
| Specific rotation[α]20/D(C=4 H2O) | +84.0-+86.0○ |
| Chloride (Cl) | Not more than 0.02% |
| Ammonium(NH4+) | Not more than 0.02% |
| Iron(Fe3+) | Not more than 0.001% |
| Sulfate(SO42-) | Not more than 0.02% |
| Heavy metal(Pb) | Not more than 10ppm |
| Loss on drying | Not more than 0.30% |
| Other amino acids | Not more than 0.5% |
| Residue on ignition(sulfated) | Not more than 0.10% |
| Assay | 98.0 to101.0% |
D-脯氨酸
2022-04-20 21:50 浏览:231
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