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TEL：0086-27-82288353
+86-13971029269
FAX：0086-27-82288295
Email: whcz_78@163.net
ADD.: Rm 1013,BLDG 3,Area C,Hankou City Plaza,Houhu Avenue,Wuhan
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
| ITEMS | STANDARD |
| Appearance | White crystals or crystalline powder |
| Assay | 99.0 - 100.5% |
| Specific Rotation | -0.10 o --- +0.10 o |
| Residue on ignition | 0.10% max |
| Water-insoluble substance | 0.1% max |
| Fumaric Acid | 1.0% max |
| Maleic Acid | 0.05% max |
| Heavy metals(as Pb) | 10 ppm max |
| Arsenic(As) | 4 ppm max |
