has role gas molecular entity hydrogen sulfide A sulfur hydride consisting of a single sulfur atom bonded to two hydrogen atoms. A highly poisonous, flammable gas with a characteristic odour of rotten eggs, it is often produced by bacterial decomposition of organic matter in the absence of oxygen. H2S HYDROSULFURIC ACID Hydrogen sulfide Hydrogen-sulfide Schwefelwasserstoff Sulfide [SH2] acide sulfhydrique dihydridosulfur dihydrogen monosulfide dihydrogen sulfide dihydrogen(sulfide) hydrogen monosulfide hydrogen sulfide hydrogen sulphide hydrogene sulfure sulfane sulfure d'hydrogene metabolite toxin hydrosulfide sulfonium hydracid sulfur hydride vasodilator agent mononuclear parent hydride genotoxin signalling molecule Escherichia coli metabolite