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Red lead

Red lead is a mixed valence crystalline compound, containing both lead (2) oxide and lead (4) oxide: lead(II,IV) oxide, also called minium. Red lead is an inorganic compound with the chemical formula Pb3O4. (Source: BXXXD at German Wikipedia. Creative Commons Attribution 3.0 Unported [CC BY 3.0] license, creativecommons.org/licenses/by/3.0.)