Appearance: White or yellowish crystalline powder
Appearance of solution: 40nm ≤0.05

Assay: 99.0%~101.0%

Related substances:
     Single impurity: 0.2%max
     Total impurities :0.5%max

Heavy metals: 10ppm Max
Loss on drying: 0.5%max

Package: 25kg/fibre drum