What is "hydrogen disulfide"

alt. 1 (context chemistry English) the sulfur analogue of hydrogen peroxide, H₂S₂ 2 (context erroneously English) hydrogen sulfide n. 1 (context chemistry English) the sulfur analogue of hydrogen peroxide, H₂S₂ 2 (context erroneously English) hydrogen sulfide

Hydrogen disulfide is the inorganic compound with the formula HS. It is a pale yellow volatile liquid with a camphor-like odor. It decomposes readily to hydrogen sulfide (HS) and elemental sulfur. It is a hydrogen chalcogenide.