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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.002 |
Residue after calcination | <0.005 |
Nitrates and other oxidizing agents (NO3-) | <0.0005 |
Sulfates (SO42-) | <0.002 |
Phosphates (PO43-) | <0.0003 |
Thiocyanates (SCN-) | <0.001 |
Iron (Fe2+) | <0.0002 |
Calcium (Ca2+) | <0.001 |
Magnesium (Mg2+) | <0.001 |
Arsenic (As3+) | <0.00001 |
Heavy metals (Pb2+) | <0.0002 |
pH of 5% water solution | 4,5 - 5,5 |