11difluoroethylene

1,1-Difluoroethylene, also known as vinylidene fluoride (VDF) or R-1132a, is an organofluorine compound with the chemical formula C2H2F2. It is a colorless gas at room temperature and pressure. It is a halogenated alkene with two fluorine atoms attached to the same carbon atom. 1,1-Difluoroethylene is a monomer used in the production of polymers, most notably polyvinylidene fluoride (PVDF) and fluoroelastomers. PVDF is a specialty plastic known for its excellent chemical resistance, thermal stability, and piezoelectric properties, finding applications in chemical processing, electrical insulation, and sensors. Fluoroelastomers are used in high-performance seals and gaskets that require resistance to harsh chemicals and high temperatures. The synthesis of 1,1-difluoroethylene typically involves dehydrofluorination of 1,1,1-trifluoroethane. It is flammable and can form explosive mixtures with air. Due to its reactive nature and potential hazards, it is handled with appropriate safety precautions in industrial settings. It is an isomer of other difluoroethylene compounds, such as 1,2-difluoroethylene.