Yttrium(III) oxide

Yttrium(III) oxide
IUPAC name	Yttrium(III) oxide.
Other names	Yttria, diyttrium trioxide, yttrium sesquioxide
Identifiers
CAS number	1314-36-9
RTECS number	ZG3850000
Properties
Molecular formula	Y2O3
Molar mass	225.81 g/mol
Appearance	White solid.
Density	5.010 g/cm³, solid
Melting point	2425 °C
Boiling point	4300 °C
Solubility in water	insoluble
Solubility in alcohol acid	soluble
Structure
Crystal structure	Cubic (bixbyite), cI80
Space group	Ia-3, No. 206
Coordination geometry	Octahedral
Hazards
EU classification	None listed.
R-phrases	Not hazardous
Related compounds
Other cations	Scandium(III) oxide, Lanthanum(III) oxide
Related compounds	Yttrium barium copper oxide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Yttrium oxide is Y₂O₃. It is an air-stable, white solid substance. Yttrium oxide is used as a common starting material for both materials science as well as inorganic compounds.

Other websites

• Yttrium oxide information at Webelements.
• External MSDS Data Sheet.