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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 powder |
| Assay(%) | 98.5 - 101.0 |
| Specific rotation(°) | -0.5 - +0.5 |
| State of solution(%) | 98.0 Min |
| Loss on drying(%) | 8.5 - 12.0 |
| Ash(%) | 0.10 Max |
| Heavy metals(ppm) | 10 Max |
| As(ppm) | 1 Max |
| Cl(%) | 19.89 - 20.29 |
| NH4(%) | 0.02 Max |
| SO4(%) | 0.02 Max |
| Fe(ppm) | 10 Max |
