Hydrogen sulfide

:For an alternative meaning of H2S, see H2S radar.

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Hydrogen sulfide (hydrogen sulphide in British English), H2S, is a colorless, toxic, flammable gas that is responsible for the foul odor of rotten eggs. It often results when bacteria break down organic matter in the absence of oxygen, such as in swamps and sewers. It also occurs in volcanic gases, natural gas and some well waters.

Related Topics:
British English - H - S - Toxic - Gas - Egg - Bacteria - Oxygen - Swamp - Volcanic - Natural gas

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Hydrogen sulfide is also known as sulfane, sulfur hydride, dihydrogen monosulfide, sulfurated hydrogen, sewer gas and stink damp. IUPAC accepts the names "hydrogen sulfide" and "sulfane"; the latter one is used exclusively when naming more complicated compounds.

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