The OH reaction rate constants have been measured for CF3CH2OH, CF3CF2CH2OH, and CF3CH(OH)CF3
over the temperature range 250−430K. Kinetic measurements have been carried out using the discharge
flow, laser photolysis, and flash photolysis methods, combined respectively with the laser-induced fluorescence
technique to monitor the OH radical concentrations. The influence of impurities contained in the sample of
CF3CF2CH2OH has been investigated by means of sample purification using gas chromatography. No sizable
effect of impurities was found on the measured rate constants of these three fluorinated alcohols. The Arrhenius
rate constants have been determined from the respective kinetic data as k(CF3CH2OH) = (2.00 ± 0.37) ×
10-12 exp[−(890 ± 60)/T], k(CF3CF2CH2OH) = (1.40 ± 0.27) × 10-12 exp[−(780 ± 60)/T], and k(CF3CH(OH)CF3) = (6.99 ± 1.56) × 10-13 exp[−(990 ± 70)/T] cm3 molecule-1 s-1. A method of predicting the OH
reaction rate constants for fluorinated alcohols, hydrofluorocarbons, alkanes, and alcohols has been proposed.
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