硫化铝（Aluminium sulfide），化学式为Al₂S₃，将其投入水中会发生双水解反应生成硫化氢及氢氧化铝：

由于硫化铝的双水解反应，最简单的硫化铝制备方法是，将铝粉与硫粉共热：

Aluminum sulfide or aluminium sulphide is a chemical compound with the formula Al₂S₃. This colorless species has an interesting structural chemistry, existing in several forms. The material is sensitive to moisture, hydrolyzing to hydrated aluminium oxides/hydroxides. This can begin when the sulfide is exposed to the atmosphere. The hydrolysis reaction generates gaseous hydrogen sulfide (H₂S).