The dual laminate, poly (ethylene-chlorotrifluoroethylene) / fiber-reinforced plastic (ECTFE/FRP), has proven successful in providing leak-free performance in many sodium chlorate manufacturing plants. ETCFE/FRP chlorate electrolytic cells, gas collectors, pipes, and chlorine
scrubbers have operated for over eighteen years, outlasting titanium in similar applications. ECTFE-lined steel pipes have replaced CPVC, FEP, PVDF and other corrosion-resistant polymers due to ECTFE low permeability in hydrogen gas lines at temperatures as high as 95°C. A new fluoropolymer, poly (perfluoromethylvinyl ether-tetrafluoroethylene) (MFA), has been introduced for scrubbers and chlorate cells. MFA offers increased corrosion protection against high chlorine concentrations at
elevated temperatures and is ideal for most sodium chlorate and chlor-alkali applications. Keywords: dual laminate, sodium chlorate, chlorine, fluoropolymers, ECTFE, MFA, permeability.