Where It Comes From
Made for use as a solvent and to make other chemicals; releases can occur during manufacturing, spills, and from hazardous waste sites. Production in the U.S. is limited today [1].
How You Are Exposed
Breathing contaminated air at work or near industrial sites, drinking polluted well water, skin contact with liquid, or vapor intrusion into homes over contaminated soil/groundwater [1][2].
Why It Matters
Affects the nervous system, liver, and kidneys; very high levels can be life‑threatening. Cancer evidence is inadequate; EPA considers it not classifiable for human cancer risk [1].
Who Is at Risk
Workers handling solvents, people living near industrial facilities or hazardous waste sites, and private well users in affected areas [1][2].
How to Lower Your Exposure
Use ventilation and protective gear at work; follow safety data sheets. Test private wells if near industry or waste sites; address vapor intrusion; store and dispose chemicals properly; report spills [1][2].
References
- [1]U.S. EPA. 1,1,1,2-Tetrachloroethane Hazard Summary (TTN Air Toxics), revised 2000.
- [2]CDC/NIOSH. Pocket Guide to Chemical Hazards: 1,1,1,2-Tetrachloroethane (CAS 630-20-6).