ceriumdioxide

Cerium dioxide, also known as ceric dioxide, is a chemical compound with the formula CeO2. It is a white, amorphous, and non-hygroscopic powder. Cerium dioxide is a common component of catalytic converters in automobiles, where it helps to convert toxic carbon monoxide and nitrogen oxides into less harmful substances. It is also used as a polishing compound in optics and as a dopant in glass and ceramics to improve their optical and thermal properties. Cerium dioxide is a basic oxide and is amphoteric, meaning it can react with both acids and bases. It is insoluble in water but soluble in acids. Cerium dioxide is a strong oxidizing agent and can react with reducing agents to form cerium(III) oxide (Ce2O3). It is also used in the production of other cerium compounds and as a catalyst in various chemical reactions. Cerium dioxide is generally considered safe for use in industrial and consumer applications, but like all chemicals, it should be handled with care to avoid inhalation or skin contact.