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Aluminium selenide facts for kids

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Aluminium selenide
AlSestructure.png
Other names Aluminium(III) selenide
Identifiers
CAS number 1302-82-5
PubChem 164804
EC number 215-110-6
SMILES [Al+3].[Al+3].[Se-2].[Se-2].[Se-2]
Properties
Molecular formula Al2Se3
Molar mass 290.84 g/mol
Appearance yellow to brown powder
Odor odorless
Density 3.437 g/cm3
Melting point

947 °C, 1220 K, 1737 °F

Solubility in water decomposes
Structure
Crystal structure Monoclinic, mS20, Space group Cc, No. 9
Thermochemistry
Std enthalpy of
formation ΔfHo298
-566.9 kJ/mol
Standard molar
entropy So298
154.8 J/mol K
Hazards
EU classification not listed
NFPA 704

NFPA 704.svg

0
3
3
 
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Aluminium selenide, also known as aluminum selenide or aluminium(III) selenide, is a chemical compound. Its chemical formula is Al2Se3. It contains aluminium in its +3 oxidation state. It contains aluminium and selenide ions.

Properties

It reacts with water to make hydrogen selenide. It is a reducing agent and can burn to make aluminium oxide and selenium dioxide.

Preparation

It is made by reacting selenium with aluminium powder at a high temperature.

Uses

It is used to make hydrogen selenide.

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