Appearance | powder insoluble in water, easily soluble in mineral acids |
Colour | white |
Barium carbonate (BaCO3) content [% min] | 99 | 99 | 98 |
Substances insoluble in HCl content [% max] | 0,01 | 0,02 | 0,1 |
Substances soluble in H2O (OH-, CO32-) content [% max] | 0,02 | 0,02 | 0,05 |
Heavy metals (Pb2+) content [% max] | 0,005 | 0,001 | 0,002 |
Iron (Fe3+) content [% max] | 0,001 | 0,001 | 0,002 |
Sodium and potassium (Na+K) content [% max] | 0,05 | 0,1 | 0,25 |
Calcium and strontium (Sr + Ca) content [% max] | 0,25 | 0,25 | 0,5 |
Total nitrogen (N) content [% max] | 0,001 | 0,002 | 0,005 |
Chlorides (Cl-) content [% max] | 0,001 | 0,002 | 0,01 |
Sulphites (S2-) content [% max] | 0,0005 | 0,0005 | 0,001 |