Assay (complexometric): ≥ 99 %
Substances insoluble in nitric acid: ≤ 0.02 %
P (phosphorus): ≤ 0.001 %
Ag (Silver): ≤ 0.002 %
As (Arsenic): ≤ 0.0005 %
Fe (Iron): ≤ 0.005 %
Mn (Manganese): ≤ 0.001 %
Pb (Lead): ≤ 0.01 %
Sb (Antimony): ≤ 0.001 %
Sn (Tin): ≤ 0.01 %



