Aluminium sulfide

Aluminium sulfide is a greyish solid, with a bad sulfide smell, especially in moist air. It has the chemical formula Al2S3. It reacts with water to release hydrogen sulfide, and is insoluble in most solvents. It melts at 1100 °C and sublimes at 1,500 °C. Aluminium sulfide has at least six crystalline forms, the more important ones being α, β, γ and δ.

Aluminum Sulfide is used in the preparation of hydrogen sulfide.
Used to produce chemicals used in the tanning and papermaking industry.
Used to produce organic compounds such as ethanethiol.

To prepare hydrogen sulfide.

Aluminium sulfide can be prepared through a thermite-like reaction between aluminium and sulfur powders.
2 Al + 3 S → Al2S3

Irritant to skin and mucous membranes.