Atmospheric chemistry of CF3CH2CF2CH3 (HFC-365mfc): Kinetics and mechanism of chlorine atom initiated oxidation, infrared spectrum, and global warming potential

Smog chamber/FTIR techniques were used to study the chlorine atom initiated oxidation of CF3CH2CF2CH3 in 700 Torr of N2/O2 at 296 K. Relative rate techniques were used to measure k(Cl + CF3CH2CF2CH3) = (1.02 ± 0.14) × 10−15 cm3 molecule−1 s−1. The reaction proceeds via attack on the –CH3 group leading to formation of CF3CH2CF2CHO which in turn is oxidized to CF3CHO and COF2. The integrated IR band strength of CF3CH2CF2CH3 over the range 600–1600 cm−1 is (1.89 ± 0.10) × 10−16 cm2 molecule−1 cm−1. The global warming potential of CF3CH2CF2CH3 is estimated to be 997 over a 100 year time horizon.