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Impurities content (weight %) | |
---|---|
Cobalt(II) oxide (CoO) in calcined reagent | 5.7 - 6.7% |
Tungsten(VI) oxide (WO3) in calcined reagent | 92.4 - 92.8% |
Insoluble in water substances | <0.05 |
Loss on ignition | <13% |
Total Nitrogen (N) | <0.05 |
Iron (Fe2+) | <0.003 |
Nickel (Ni2+) | <0.1 |
Heavy metals (Pb2+) | <0.005 |