Index items
|
Standard value
|
Test Results
|
Appearance
|
White crystal powder
|
Meets the requirement
|
purity
|
≥99%
|
99.2%
|
PH value
|
6.0—8.0
|
6.70
|
Sulphate
|
≤0.05%
|
0.03%
|
chloride
|
≤0.04%
|
0.04%
|
lead,ug/g
|
≤2%
|
1.38%
|
loss on drying
|
≤0.5%
|
0.21%
|
Reducing substances
|
≤0.7%
|
0.38%
|