hexafluoropropylene

Hexafluoropropylene, also known as hexafluoropropene (HFP), is an unsaturated fluorinated hydrocarbon and a member of the hexafluoropropene family. Its general formula is C3HF6, and in the principal industrial isomer the structure is CF3-CHF=CF2, a vinyl fluoride derivative. The molecule is highly electronegative and exists as a volatile substance that is typically handled as a reactive monomer in chemical manufacturing.

Industrial production and handling of hexafluoropropylene involve fluorination chemistry applied to propylene or related intermediates. The process yields several isomeric forms, which are separated and purified for use in polymer synthesis. As a reactive olefin, HFP readily undergoes radical polymerization or copolymerization with other fluorinated monomers under controlled conditions.

A major use of hexafluoropropylene is as a comonomer in the production of fluoropolymers and fluoroelastomers. It is common in terpolymers or copolymers with vinylidene fluoride (VDF) and tetrafluoroethylene (TFE) that are employed to make materials such as fluorinated elastomers and resistant plastics. These polymers are valued for chemical resistance, high-temperature stability, and low permeability, finding applications in seals, gaskets, o-rings, and other components used in harsh chemical or demanding operating environments.

Safety and environmental considerations are important for hexafluoropropylene. It is a reactive gas that can irritate the eyes, skin, and respiratory tract; proper ventilation, containment, and protective equipment are required during handling. Releasing fluorinated monomers to the environment is discouraged due to persistence and potential formation of hazardous byproducts, so industrial processes emphasize containment, recovery, and proper disposal.