Where It Comes From
Made and used in chemical manufacturing (e.g., as an intermediate); releases may occur from plants or spills during transport [2].
How You Are Exposed
Mostly by breathing workplace air; also possible through skin contact or from contaminated air, soil, or water near industrial sites. Consumer exposure is unlikely [1][2].
Why It Matters
Can cause irritation, coughing, headache, and dizziness. High exposures may affect the liver and kidneys. Human data are limited; health risks are better documented in workplace and lab studies [1][2].
Who Is at Risk
Workers who make, use, or handle it; maintenance and emergency responders; people living near production sites; individuals with asthma or liver/kidney disease; pregnant workers [1][2].
How to Lower Your Exposure
At work, use closed systems, ventilation, monitoring, and appropriate PPE (gloves, goggles, respirators as needed). In communities, follow spill advisories and consider testing well water if near industrial facilities [1][2].
References
- [1]CDC/NIOSH Pocket Guide to Chemical Hazards: 2-Butene, 1,4-dichloro (CAS 764-41-0).
- [2]U.S. EPA CompTox Chemicals Dashboard: 1,4-Dichloro-2-butene (CASRN 764-41-0).