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Impurities content (weight %) | |
---|---|
Insoluble in HCl substances | <0.01 |
Soluble carbonates and alkalis | <0.001 |
Total nitrogen (N) | <0.04 |
Sulfides (S2-) | <0.0001 |
Chlorides (Cl-) | <0.001 |
Potassium + Sodium (K+ + Na+) | <0.01 |
Calcium (Ca2+) | <0.0005 |
Magnesium (Mg2+) | <0.0005 |
Aluminum, Iron, Silicon, Manganese, Copper, Lead, Silver, Strontium, Zinc: not detected by spectroscopic methods |