Perhaloalkenes are extensively used to synthesize fluoropolymers. A series of hydrocarbons containing both chlorine and fluorine, have been used as refrigerants, blowing agents, cleaning fluids, solvents and as fire extinguishing agents. Fluorinated alkenes are the most likely reactive impurities in HCFCs, being present as residual starting material from production or as decomposition products. They have been shown to cause stratospheric ozone depletion and have been banned for many uses. It is widely known that, the main gas phase removal process of the VOCs in the troposphere is photooxidation by OH radicals.