Assay of Ba(CH3COO)2 (by chelatometry) min 99.0% pH(5% solution) 7.0-8.5 Chloride(Cl) max 0.001% Substance oxidizables (as NO3) max 0.005% Heavy metals(as Pb) max 0.0005% Calcium (Ca) max 0.05% Iron (Fe) max 0.0005% Strontium (Sr) max 0.2% Substance not precipitated by sulfuric acid(as sulfates) max 0.1%