Gadolinium(III) oxide (archaically gadolinia) is an inorganic compound with the formula Gd2O3. It is one of the most commonly available forms of the rare earth element gadolinium, derivatives of which are potential contrast agents for magnetic resonance imaging.
G 1601 (OTTO) Gadolinium oxide, 99% Cas 12064-62-9 - used in glass and electronic industries. It also acts as a neutron shield, a catalyst, a dielectric ceramic and is used for filament coatings, special glasses, lasers, masers and telecommunication.