Thallium and Thallium Compounds

Abstract Thallium and thallium compounds are produced by roasting zinc, copper, and lead ores. Demand and production of thallium and its compounds are small because of the element's high toxicity. Thallium(I) oxide, thallium(III) acetate, and thallium(III) nitrate are unstable. Other thallium(I) and thallium(III) compounds are stable. Certain alloys of thallium are used in bearings, contact points, as well as equipment for extreme conditions such as in polar regions or in space.