Rate constants for the reactions of OH radicals with CH3OCF2CF3, CH3OCF2CF2CF3, and CH3OCF(CF3)2

The rate constants for the reactions of OH radicals with CH₃OCF₂CF₃, CH₃OCF₂CF₂CF₃, and CH₃OCF(CF₃)₂ have been measured over the temperature range 250–430 K. Kinetic measurements have been carried out using the flash photolysis, laser photolysis, and discharge flow methods combined respectively with the laser induced fluorescence technique. The influence of impurities in the samples was investigated by using gas‐chromatography. The following Arrhenius expressions were determined: k(CH₃OCF₂CF₃) = (1.90) × 10^?12 exp?(1510 ± 120)/T], k(CH₃OCF₂CF₂CF₃) = (2.06) × 10^?12 exp?(1540 ± 80)/T], and k(CH₃OCF(CF₃)₂) = (1.94) × 10^?12 exp?(1450 ± 70)/T] cm³ molecule^?1 s^?1. © 1999 John Wiley & Sons, Inc. Int J Chem Kinet 31: 846–853, 1999