AgNO3 MW 169.87  Assay(on dried material) min 99.0% 500 gm Chloride(Cl) max 0.001% Sulphate(SO4) max 0.01% Iron(Fe) max 0.001% Lead(Pb) max 0.002% Substances not precipitatedby hydrochloric acid (as sulphate) max 0.01%