Potassium hydrogensulphide; Potassium sulfide (K(SH); [ChemIDplus] Potassium hydrogen sulfide, anhydrous; Potassium mercaptan; [Strem MSDS]
Colorless, deliquescent or white, highly hygroscopic solid; [Merck Index] Solution: Transparent to dark green liquid with an odor of rotten eggs; [CAMEO] Off-white powder with an odor of rotten eggs; Hygroscopic; [Strem MSDS]
Used in separation of metals; [Hawley]
Usually found as the hemihydrate; Quickly turns yellow on exposure to air forming polysulfides and hydrogen sulfide; [Merck Index] In solution, reacts with water and may form hydrogen sulfide; Corrosive to skin and eyes; [CAMEO] May produce hydrogen sulfide gas on contact with air or stomach acids; Causes burns; Danger of irreversible effects; Inhalation may cause corrosive effects on the respiratory tract; [Strem MSDS] See "Hydrogen sulfide."
Industrial Processes with risk of exposure: