| 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) |
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