|
Items |
Standard |
|
Appearance |
White or colorless crystalline particles or powder |
|
Identification |
Conforms |
|
Alkalinity |
Pass test |
|
Assay(on dry basis) % |
99.0-100.5 |
|
Drying reduction % |
3.0-6.0 |
|
Light transmittance % |
≥95.0 |
|
Easy to carbonize |
≤1.0 |
|
Sulfate % |
≤0.015 |
|
Chloride % |
≤0.005 |
|
Oxalate % |
≤0.03 |
|
Iron salt mg/kg |
≤5.0 |
|
Calcium salt % |
≤0.02 |
|
Total arsenic mg/kg |
≤1 |
|
Lead mg/kg |
≤2.0 |
|
Water insoluble matter |
Pass test |
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