Chemical of the Week – Dichlorethene

Dichloroethene is a colorless, volatile liquid with a sweet smell that makes it seem almost pleasant, but this chlorinated hydrocarbon packs multiple hazards wrapped in a deceptively friendly package.

Used primarily in vinyl chloride production and specialty solvents, dichloroethene is a moderate irritant to eyes and respiratory tract at low exposures, but the real dangers emerge at higher concentrations and with chronic exposure: it’s a known reproductive hazard that affects fertility and fetal development, a probable human carcinogen, and a liver and kidney poison that causes delayed organ damage you won’t see until someone shows up with jaundice or kidney failure days after the incident.

The chemical is also volatile and flammable, so spills create vapors that form explosive mixtures in confined spaces, and under certain conditions (particularly with bases or heat) dichloroethene can undergo runaway polymerization that generates heat and pressure sufficient to rupture containers.

Whether you’re responding to a chemical manufacturing facility incident, transportation spill, solvent release, or vinyl production plant accident, treat dichloroethene as both an immediate irritant and a systemic poison requiring aggressive respiratory protection, skin barrier, and environmental containment. Don’t let the pleasant odor deceive you into casual handling: anyone with significant inhalation exposure needs medical evaluation and long-term health monitoring for liver and kidney effects, and female workers or responders of reproductive age deserve special consideration since the reproductive hazard means exposure carries consequences beyond the individual. Respect this chemical’s multiple hazard pathways and remember that “smells sweet” is absolutely no indicator of safety.

Have fun and let us know how you did in researching the hazards.