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Impurities content (weight %) | |
---|---|
Insoluble substances in KI solution | <0.02 |
Residue after calcination | <0.005 |
Chlorides (Cl-) | <0.1 |
Iron (Fe2+) | <0.001 |
Mercury(I) (Hg+) | <0.1 |
Heavy metals (Pb2+) | <0.001 |