Scandium(III) oxide, Sc2O3, or scandia, is a high melting rare earth oxide.
S 1293 (OTTO) Scandium oxide, GR 99.99% Cas 12060-08-1 - used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material).