Appearance white crystalline powder
Assay (arg.) ≥ 99.5 %
Heavy metals (as Pb) ≤ 0.0005 %
Insoluble matter in H2O ≤ 0.003 %
pH (5 %; H2O; 20°C) 6.0 - 9.2
Reducing substances of I2 (as I) ≤ 0.001 %
Loss on drying (150°C) ≤ 0.2 %
Chloride and bromide (as Cl) ≤0.01 %
Iodate ≤0.0003 %
Nitrogen compounds (as N) ≤0.001 %
Phosphate ≤0.001 %
Sulfate ≤0.0025 %
As ≤0.00001 %