Assay (argentometric, LiCl): ≥ 99 %
Insoluble matter: ≤ 0.01 %
Nitrate (NO₃): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Ba (Barium): ≤ 0.002 %
Ca (Calcium): ≤ 0.005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.01 %
Mg (Magnesium): ≤ 0.005 %
Na (Sodium): ≤ 0.02 %
Total of alkali: ≤ 0.008 meq/g
Loss on drying (130 °C): ≤ 1.0 %



