Very expensive. Lower continuous use temperature than ETFE or PFA (approx. 150°C/300°F). Higher dissipation factor than PTFE. Inferior chemical resistance to PTFE attacked by some halogenated hydrocarbons, ethers and esters. Use of CTFE now limited due to competition from other, more recently developed, melt processable polymers, e.g. FEP, PFA, ECTFE & ETFE.