Hydrogen sulfide

Hydrogen sulfide or hydrogen sulphide is a chemical compound with the formula H2S. It is a colorless, toxic, and flammable hydrogen chalcogenide gas. Trace amounts in the ambient atmosphere have a characteristic foul odor of rotten eggs.

Swedish chemist Carl Wilhelm Scheele is credited with having discovered the chemical composition of purified hydrogen sulfide in 1777.

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Source: Wikipedia · Image: Wikimedia Commons · Public domain

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