A sample of lead arsenate, an insecticide used against the potato beetle, contains 1.3813 g lead, 0.00672g of hydrogen, 0.4995 g of arsenic, and 0.4267 g of oxygen. Calculate the empirical formula for lead arsenate. INORGANIC AND ORGANIC LEAD COMPOUNDS Metallic lead and several inorganic and organic lead compounds have been considered by previous working groups convened by IARC (IARC, 1972, 1973, 1976, 1980, 1987). Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. Lead arsenate is a chemical compound. Its chemical formula is PbHAsO 4. It has lead, hydrogen, and arsenate (HAsO 42-) ions in it. The lead is in its +2 oxidation state . American Mineralo gist,Volume 74, pages 1377-1381, 1989 Mawbyite, a new arsenate of lead and iron related to tsumcorite and carminite, from Broken Hill. New South Wales Ar,r,,lN Pnrxc.