Specification | Standard Item | GB25548-2010 | HG2921-1999 | FCCV | E282 |
Specification | Content(dry basis) | ≥99.0% | ≥99% | 98.0%~100.5% | ≥99% |
Water insoluble matter | ≤0.3% | ≤0.3% | ≤ 0.2% | ≤0.3% | |
PH (10%) | --------- | 7~9 | 7.5~10.5 | 6~9 | |
Loss on drying(120℃,2h), | ≤9.5% | ≤9.5% | ≤ 5.0% | ≤4% | |
Free acid and alkali | Passed test | Passed test | --------- | --------- | |
Arsenic (as As2O3) | ≤0.0003% | ≤0.0004% | --------- | ≤0.0003% | |
Heavy metals (as Pb) | ≤0.001% | ≤0.001% | ≤ 2 mg/kg | ≤0.001% | |
Fluoride (as F) | ≤0.003% | ≤0.003% | ≤ 0.003% | ≤0.001% | |
Iron | ≤0.005% | --------- | --------- | ≤0.005% | |
Magnesium(as MgO) | --------- | --------- | Passed test (about | --------- | |
0.4%) |