Dipotassium monosulfide (K2S); Dipotassium sulfide; Potassium monosulfide; Potassium sulfide (2:1); Potassium sulfide (K2S); [ChemIDplus] UN1382
White very hygroscopic solid; Discolored by air; [Merck Index] Red or yellow-red deliquescent solid; [Hawley] White to yellow powder with an odor of rotten eggs; [Strem MSDS]
Used in photography (toner); [www.ci.tucson.az.us/arthazards/medium.html] Used as an analytical reagent, depilatory, and medicine; [Hawley]
May explode on percussion; [Merck Index] May spontaneously ignite; Powder is explosive; [Hawley] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause pulmonary edema; [ICSC] Emergency treatment: "Corrosives- alkaline"; [HSDB] A strong reducing agent; Pyrophoric; May cause severe skin, eye, and mucous membrane irritation; [CAMEO] Releases hydrogen sulfide on contact with moisture; A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation of high concentrations may cause pulmonary edema; [CHEMINFO] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; [Strem MSDS]
The Guide in the Emergency Response Guidebook is for "Potassium sulfide, anhydrous (or less than 30% water)."
Industrial Processes with risk of exposure:
Activities with risk of exposure: