C 3693 Cerium(IV) oxide powder, 1-3 μm, 99.9% Cas 1306-38-3 -used in ceramics, and to polish glass and stones. It is applied as solid electrolyte in fuel cells. It can also be employed as a co-catalyst in many number of reactions. It is also used as an antioxidant, and to generate hydrogen through water splitting. It is used as a high-temperature hydrocarbon oxidation catalyst in self-cleaning ovens. It can be used in infrared filters, incandescent mantles, and sunscreens in combination with other materials. It finds use as a catalyst support, and to sensitize photosensitive glass.