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| Impurities content (weight %) | |
|---|---|
| Insoluble in water substances | 0.005 |
| Total Nitrogen (N) | 0.002 |
| Bromides (Br-) | 0.02 |
| Chlorides (Cl-) | 0.05 |
| Sulfates (SO42-) | 0.005 |
| Iron (Fe2+) | 0.001 |
| Sodium (Na+) | 0.025 |
| Heavy metals (Pb2+) | 0.0005 |
| pH of 5% water solution | 5 - 9 |




