Item

Standard

Appearance

White or slight Yellowish Crystal Powder ,

Loss on dry, %

1.0 max

Content,   

98% min

Reduzate ,%

0.7 max

Chloride, %

0.07max

Sulphate, %

0.05max

PH

6.2-7.8

Pb ,μg/g

2max

Heavy metal,μg/g

10max

Arsenic salt,μg/g

2max

Appearance of solution

Clear