Barium Oxide, 97%, Certified, 50g For Research & Development Not for drug, clinical use in humans, for food or food additive use
Certificate of Analysis: Appearance off-white powder with a gray cast Assay (titration) 97.0% Carbonate (CO3) <2% Chloride (Cl) <0.01% Clarity test passes Heavy metals (as Pb) <0.005% Identification passes Insoluble mater in HCl <0.5% Iron (Fe) <0.005% Melting point 1920ºC Substances not precipitated by H2SO4 (as SO4) <0.5% Total nitrogen (N) <0.001%