Hydrogen sulfide

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Formula: H2S

A colourless, toxic, flammable gas with a characteristic smell of rotten eggs. It is found naturally in volcanic gases and is often formed during decay of animal matter. Hydrogen sulfide is slightly soluble in water forming a very weak dibasic acid that is sometimes called hydrosulfuric acid.

It is used as an antiseptic, a bleach and as a chemical reagent.


Hydrogen sulfide may be produced by

See also

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