Scandium(III) oxide, Sc2O3, or scandia, is a high melting rare earth oxide.
Molar mass： 137.910 g/mol
Appearance： White powder
Density： 3.86 g/cm3
Melting point： 2,485 °C (4,505 °F; 2,758 K)
Solubility in water：insoluble in water
Solubility： soluble in hot acids (reacts)
It is 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).