Appearance: White crystalline powder Content: ≥ 40,000,000 IU / g (HPLC method); Water: not more than 1%; 2.Characteristics Solubility: It is easily deteriorated in the air or in sunlight. It is easily soluble in ethanol, ether, chloroform or acetone, slightly soluble in vegetable oil, and insoluble in water. Stability: below 25 ℃ and kept in original packaging, can be stored for 36 months; once opened, to be used in a short time as possible or re-sealed with nitrogen. Storage: low temperature, away from light and heat, oxygen. 3.Composition Vitamin D3: 98-102%, 4.Packaging In 10g-25kg net carton with alumimum pot. 5.Applications (food processing) and scopes Improving the body of calcium and phosphorus absorption, getting the plasma levels of calcium and phosphorus to saturation.