Product Main

Specifications

1.Main specifications

Items
Specifications
Appearance
White crystalline powder
Yellowy crystalline powder
Specific Optical Rotation
-108°~-120°
-105°~-115°
Absorption
≤0.15
≤0.18
Loss on drying
≤7%
≤7%
Assay
≥95%, 97%
≥90%

2.Analysis method of Assay
     HPLC.Mobile phase,n-hexane:dioxane:n-pentanol=445:45:10,Velocity,1.5ml/min.Wavelength,254nm.

3.Usage
     a.Important intermediate for synthesis of Vitamin D3.b.Additive for skin-care cosmetics ot prevent from UV radiation and skin disease. c.Lab-purpose reagent.

4.Packing
     Aluminum bags lined with food grade PE bags,packaged in paper cartons.The package size can be made as per customers' requirement.

5.Stability and storage
     Stored under dry,cool and dark condition and avoid moisture,water or heat.The shelf life is 6 months