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Impurities content (weight %) | |
---|---|
Insoluble substances in diluted CH3COOH | <0.005 |
Residue after calcination | <0.02 |
Sulfates (SO42-) | <0.05 |
Chlorides (Cl-) | <0.015 |
Iron (Fe2+) | <0.001 |
Arsenic (As3+) | <0.0001 |