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1.Technical Process

Vitamin D₃ Powder 500 Feed Grade is obtained from the spray of Vitamin D₃ Oil Feed Grade.

2.Main specifications

Items	Specifications
Characteristics	Yellowish or yellow-brown granular
Granularity	100% passing 2^# sieve
Content	VD₃ 500,000IU/g min
Loss on drying	0.5% max

3.Analysis method of Assay
HPLC.Mobile phase,n-hexane:n-pentanol=996:4.Velocity,2.0ml/min.

Wavelength,254nm.

4.Usage
As additives in feed premixes.

5.Packing
25kg paper cartons lined with food grade PE bags.

6.Stability and storage
Stored under dry,cool and dark condition and avoid moisture,water or heat.The shelf life is 12 months.