High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Tetrafluoroethylene (TFE) is a chemical compound with the formula C2F4. It is the simplest alkene fluorocarbon. This gaseous species is used primarily in the industrial preparation of polymers. In organic chemistry, tetrafluoroethylene is a potent dienophile. Tetrafluoroethylene is a colorless, odorless gas. Like all unsaturated fluorocarbons it is susceptible to nucleophilic attack. It is unstable towards decomposition to C and CF4 and prone to form explosive peroxides in contact with air.