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Cerium(IV) oxide, is an oxide of the rare-earth metal cerium. It is a pale yellow-white powder with the chemical formula CeO2.
CO 207 (OTTO) Cerium oxide nanopowder, APS 50-105 nm, 99.9% - used in infrared filters, as an oxidizing species in catalytic converters and as a replacement for thorium dioxide in incandescent mantles.