Aluminium selenide

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.