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There are hundreds of organic and inorganic lead compounds, including oxides, carbonates, sulfates, chromates, silicates, and acetates. Most of these are manufactured from high-purity corroding lead. Litharge, or lead monoxide (PbO), is one of the most important of all metal compounds. Containing roughly 93 percent lead and 7 percent oxygen by weight, it is manufactured by the oxidation of metallic lead in a variety of processes, each resulting in a distinctive variation in physical properties. Hence, it is available in many particle sizes and in two crystal forms. The largest single use of litharge, sometimes blended with red lead and ...(100 of 4718 words)