Sulfide (systematically named
sulfanediide, and
sulfide(2-)) is an
inorganic anion of
sulfur with the chemical formula S
2-. It contributes no color to sulfide salts. As it is classified as a
strong base, even dilute solutions of salts such as
sodium sulfide (Na
2S) are corrosive and can attack the skin. Sulfide is the simplest sulfur anion.