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+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 | SPECIFICATION |
| Appearance | Meet the requirement |
| Identification | Meet the requirement |
| Examination | Dissolve 10mg of vitamin D2 into 2ml of 90% ethanol, add 2ml solution of digitalis saponin and incubate for 18 hours. No precipitation or cloud should be observed. |
| Melting Range | 115 ~ 119°C |
| Specific Rotation | +103°~+106 |
| Solubility | Freely soluble in alcohol |
| Reducing Substances | Max 20ppm |
| Ergosterol | none |
| OrganicVolatilityImpurities | Corresponding using method IV(467) |
