Noun
(chemistry) Any compound formally derived from hydrogen sulfide by replacing one hydrogen atom with a metal or other radical; a thiol or mercaptan.
(chemistry) The HS anion.
Source: en.wiktionary.orgDissolved sulfide and hydrosulfide salts are toxic by the same mechanism. Source: Internet
The upper clouds are composed of ammonia crystals, while the lower level clouds appear to consist of either ammonium hydrosulfide (NH 4 SH) or water. Source: Internet