Aluminium selenide

Aluminium selenide is the inorganic compound with the formula Al2Se3.

It is a solid prepared by igniting a mixture of the elements at 1,000 °C (1,830 °F): The pure compound is white, but typical samples are coloured.

[3] Samples are usually protected from moisture, because they hydrolyze readily, giving off highly toxic hydrogen selenide gas:[4] Al2Se3 has been used as a precursor to hydrogen selenide, which is released when the solid is treated with acids.

[3]

Aluminum selenide
Aluminum selenide
NFPA 704 four-colored diamond Health 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gas Flammability 0: Will not burn. E.g. water Instability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxide Special hazards (white): no code