Content
|
98.0~101.0%
|
Ph ( 10% Solution)
|
7.00~9.00
|
Loss on drying(120C,2hr)
|
37.0~41.0%
|
Sulfate(SO42-)
|
≤0.019%
|
Arsenic(as As2O3)
|
≤4mg/kg
|
Heavy metal(as Pb)
|
≤20mg/kg
|
Readily oxidizable substance
|
Red color will be sustained 3 minutes as least
|