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)
