Description

 Colorless or white powder

 clarity

 Turbidity shall not be greater

than No. 3 standard

 Water insoluble substance

 ≤0.01%

 PH

 6.0~8.0

 Chlorid and bromide

 ≤0.02%

 Iodate and iodine

 ≤0.002%

 Sulfate

 ≤0.005%

 Phosphate

 ≤0.002%

 Na

 ≤0.10%

 Ba

 ≤0.002%

 Mg

 ≤0.002%

 Fe

 ≤0.0003%

 Ca

 ≤0.002%

 AS

 ≤0.00002%

 Heavy metal

 ≤0.0005%

 purity

 ≥99.5%