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Impurities content (weight %) | |
---|---|
Insoluble in HCl substances | <0.1 |
Chlorides (Cl-) | <0.04 |
Total nitrogen (N) | <0.02 |
Iron (Fe2+) | <0.005 |
Potassium + Sodium + Calcium (K+ + Na+ + Ca2+) | <0.5 |