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地址：武汉市江岸区后湖大道汉口城市广场C区3号楼1013
网址：www.zoyochem.com
| ITEM | STANDARD |
| Appearance | White crystals or crystalline |
| Assay(%) | 98.5 - 101.5 |
| pH | 5.4 - 6.0 |
| Specific rotation(°) | -33.2 - -35.2 |
| Residue on ignition(%) | 0.10 Max |
| Loss on drying(%) | 0.20 Max |
| Cl(%) | 0.021 Max |
| As(ppm) | 2 Max |
| Heavy metals(ppm) | 20 Max |
| Organic volatile | Meets the requirements |
