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Impurities content (weight %) | |
---|---|
Insoluble in water substances | <0.001 |
Lanthanum + Neodymium + Praseodymium + Samarium (La3+ + Nd3+ + Pr3+ + Sm3+) | <0.3 |
Calcium (Ca2+) | <0.03 |
Iron (Fe2+) | <0.001 |
Sodium + Potassium (Na++K+) | <0.05 |
Lead (Pb2+) | <0.002 |
pH of 5% water solution | 4 - 6 |