Where It Comes From
Made in chemical manufacturing; used as an intermediate for pesticides. Can be released in plant incidents, spills, or fires; reacts with moisture to release corrosive gases like hydrochloric acid [1][2].
How You Are Exposed
Breathing contaminated workplace air; skin/eye contact with liquid or vapor; nearby communities may be exposed during industrial accidents [1][2].
Why It Matters
Strong irritant that can cause coughing, breathing trouble, and delayed fluid in the lungs (pulmonary edema); can burn skin and eyes; effects may be delayed after exposure [1].
Who Is at Risk
Workers in pesticide/chemical manufacturing, transport and storage, and emergency responders; people near a release site [1][2].
How to Lower Your Exposure
Workers—use closed systems, local exhaust, and proper protective gear; follow NIOSH/OSHA controls. Public—stay upwind/indoors during releases and follow official guidance; avoid contact with liquids or vapors [1][2].
References
- [1]CDC/NIOSH. Pocket Guide to Chemical Hazards: Perchloromethyl mercaptan (CAS 594-42-3).
- [2]NOAA/EPA. CAMEO Chemicals: Perchloromethyl mercaptan (CAS 594-42-3).