What is another word for hydrogen sulfide?
Pronunciation: [hˈa͡ɪdɹəd͡ʒən sˈʌlfa͡ɪd] (IPA) 
Hydrogen sulfide is a chemical compound with a distinctive, unpleasant odor often compared to rotten eggs. However, this compound has several synonyms that are less familiar to the general public, including sulfurated hydrogen, dihydrogen sulfide, and hydrosulfuric acid. These names all refer to the same compound consisting of two hydrogen atoms and one sulfur atom. Hydrogen sulfide is commonly found in natural gas, volcanic gases, and some types of bacteria. While it is toxic in high concentrations, hydrogen sulfide is also used in industry as a reducing agent, in the production of sulfuric acid, and as a chemical intermediate in the refining of petroleum.
