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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 crystal powder |
| Transmittance: | 95% Min |
| Assay: | 98% Min. |
| Chloride: | 0.04% Max. |
| Ammonium: | 0.02% Max. |
| Sulphate: | 0.048% Max. |
| Iron: | 30ppm Max. |
| As: | 2ppm Max. |
| Residue on ignition (Sulphated): | 0.20% Max. |
| Heavy Metals(Pb): | 10ppm Max. |
| Loss on drying: | 0.30% Max. |
| Other Amino acids: | Chromatographically |
| PH Value: | 6.5~7.5 |
| Nelting point: | 197~202°C |
