Disulphide vs. Sulfide

alternative spelling of disulfide

Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive.

A binary compound of sulphur containing two atoms of sulphur in each molecule; - formerly called disulphuret. Cf. Bisulphide.

Divalent sulfur, or a compound of divalent sulfur with an electropositive element or group, especially a binary compound of sulfur with a metal.

Any compound of sulfur and a metal or other electropositive element or group.

a compound of sulphur and some other element that is more electropositive