Lutetium(III) oxide, a white solid, is a cubic compound of lutetium sometimes used in the preparation of specialty glasses. It is also called lutecia. It is a lanthanide oxide, also known as a rare earth.
Molar mass： 397.932 g/mol
Melting point： 2,490 °C (4,510 °F; 2,760 K)
Boiling point： 3,980 °C (7,200 °F; 4,250 K)
Solubility in other solvents： Insoluble
Band gap： 5.5 eV
Lutetium(III) oxide is an important raw material for laser crystals. It also has specialized uses in ceramics, glass, phosphors, and lasers. Lutetium(III) oxide is used as a catalyst in cracking, alkylation, hydrogenation, and polymerization. The band gap of lutetium oxide is 5.5 eV.