Chemical of the Week – Vinyl Flouride

Vinyl fluoride is a colorless, flammable gas that you’re far less likely to encounter than its chemical cousin vinyl chloride, but when you do run into it (typically in specialized polymer production or research settings), it brings similar concerns with a fluorine twist. This liquefied compressed gas is used primarily to make polyvinylfluoride plastics and fluoropolymer coatings, and while it’s not as acutely toxic as some halogenated compounds, it’s still an asphyxiant that displaces oxygen, a flammable gas that forms explosive mixtures with air, and a compressed material that can fail catastrophically if cylinders are damaged or exposed to heat. The real kicker is what happens when vinyl fluoride burns: combustion releases hydrogen fluoride (HF), one of the nastiest and most dangerous acids you’ll encounter, along with other toxic fluorine compounds that turn a straightforward flammable gas incident into a potential HF exposure scenario. Whether you’re responding to a cylinder leak at an industrial facility, research laboratory incident, or transportation accident, treat vinyl fluoride as both a flammable gas hazard and a potential HF generator if fire gets involved: evacuate generously, approach from upwind, monitor atmosphere continuously, keep fire away from containers, and ensure medical resources understand the HF exposure risk if combustion has occurred. The good news is that vinyl fluoride incidents are relatively rare outside specialized industrial settings; the bad news is that when they happen, the combination of flammability and fluorine chemistry makes them more complicated than your typical compressed gas emergency.

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