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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.005 |
Alkalinity (NaOH) | <0.02 |
Total Nitrogen (N) | <0.001 |
Iodates + iodine (IO3-) | <0.002 |
Sulfates (SO42-) | <0.002 |
Chlorides + bromides (Cl- + Br-) | <0.02 |
Iron (Fe2+) | <0.0002 |
Calcium (Ca2+) | <0.001 |
Magnesium (Mg2+) | <0.0005 |
Heavy metals (Pb2+) | <0.0005 |