Vitamin D3 Crystal Medicine Grade 1.Technical Process Vitamin D3 Crystal medicine grade is obtained from the esterification,hydrolyzation and refining of High Potential Vitamin D3 Resin. 2.Main specifications Items Specifications Description White crystalline powder Solubility Corresponding Identification Positive Melting Point 82-87 Related substances Corresponding Light absorption 465-495 Specific optical rotation +105-112 Assay 97.0-103.0% 38,800,000-41,200,000 IU/G Conclusion Confirm to USP24,Bp98.EPIV 3.Analysis method of Assay HPLC.Mobile phase,acetonitrile:islpropanol:water=90:7:3.Velocity,1.5-2.5ml/min.Wavelength,265nm. 4.Usage a.In pharmaceutical formulations for Vitamin D remedy. b.As additives for milk,dairy,foods and beverage as Vitamin D supplement to promote the absorption of calcium and phosphorus. 5.Packaging Aluminum bags lined with food grade PE bags,then packaged into Aluminum Cans and in paper cartons.The package size can be made as per customers'requirement. 6.Stability and storage Stored under dry,cool and dark condition and avoid moisture,water or heat.The shelf life is 12 months.