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Europium(III) oxide

Chemical compound
Europium(III) oxide, is a chemical compound of europium and oxygen. It is widely used as a red or blue phosphor in television sets and fluorescent lamps, and as an activator for yttrium-based phosphors. It is also an agent for the manufacture of... Wikipedia
Boiling point: 4,118 °C (7,444 °F; 4,391 K)
Formula: Eu2O3
Melting point: 4,262°F (2,350°C)
Molar mass: 351.926 g/mol
Density: 7.4 g/cm³
Solubility in water: Negligible
Crystal structure: cubic, cI80, Monoclinic