Sulfite vs. Sulfide

Sulfitenoun

Any salt of sulfurous acid.

Sulfite

Sulfites or sulphites are compounds that contain the sulfite ion (or the sulfate(IV) ion, from its correct systematic name), SO2−3. The sulfite ion is the conjugate base of bisulfite.

Sulfidenoun

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

Sulfidenoun

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

Sulfide

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.