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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.005 |
Non-volatile substances when treated with HF | <0.05 |
Vanadium (V5+) | <0.0001 |
Iron (Fe2+) | <0.0001 |
Calcium (Ca2+) | <0.002 |
Cobalt (Co2+) | <0.00001 |
Silicon (SiO2) | <0.00005 |
Manganese (Mn2+) | <0.00001 |
Copper (Cu2+) | <0.00005 |
Arsenic (As3+) | <0.00005 |
Nickel (Ni2+) | <0.00001 |
Lead (Pb2+) | <0.0003 |
Sulfur (S) | <0.0002 |
Phosphorus (P) | <0.0001 |
Chlorides (Cl-) | <0.0001 |
Chromium (Cr3+) | <0.0001 |