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Impurities content (weight %) | |
---|---|
Insoluble in HNO3 substances | <0.005 |
Iron (Fe2+) | <0.002 |
Calcium (Ca2+) | <0.001 |
Magnesium (Mg2+) | <0.001 |
Copper (Cu2+) | <0.0015 |
Sodium (Na+) | <0.0015 |
Lead (Pb2+) | <0.02 |
Sulfates (SO42-) | <0.05 |
Chlorides (Cl-) | <0.005 |