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Yttrium(III) oxide facts for kids

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Yttrium(III) oxide
Tl2O3structure.jpg
IUPAC name Yttrium(III) oxide.
Other names Yttria,
diyttrium trioxide,
yttrium sesquioxide
Identifiers
CAS number 1314-36-9
PubChem 518711
EC number 215-233-5
RTECS number ZG3850000
SMILES O=[Y]O[Y]=O
Properties
Molecular formula Y2O3
Molar mass 225.81 g/mol
Appearance White solid.
Density 5.010 g/cm3, solid
Melting point

2425 °C, 2698 K, 4397 °F

Boiling point

4300 °C, 4573 K, 7772 °F

Solubility in water insoluble
Solubility in alcohol
acid
soluble
Structure
Crystal structure Cubic (bixbyite), cI80
Space group Ia-3, No. 206
Coordination
geometry
Octahedral
Thermochemistry
Std enthalpy of
formation ΔfHo298
-1905.310 kJ/mol
Standard molar
entropy So298
99.08 J/mol·K
Hazards
EU classification None listed.
R-phrases Not hazardous
S-phrases Template:S24/25
Related compounds
Other cations Scandium(III) oxide,
Lanthanum(III) 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.

See also

Kids robot.svg In Spanish: Óxido de itrio(III) para niños

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