Abstract
Smog chamber Fourier transform infrared techniques were used to investigate the kinetics of the reaction of CF3CF2OCH3 with Cl atoms and OH radicals: k(Cl+CF3CF2OCH3)=(1.09±0.16)×10−13 and k(OH+CF3CF2OCH3)=(1.28±0.19)×10−14cm3molecule−1s−1 in 700Torr total pressure of N2/O2 at 296±2K. The Cl-initiated oxidation of CF3CF2OCH3 gives CF3CF2OCHO in a yield indistinguishable from 100%. An estimate of k(Cl+CF3CF2OCHO)=(1.18±0.34)×10−14cm3molecule−1s−1 is provided. Based on the OH reaction rate, the atmospheric lifetime of CF3CF2OCH3 is estimated to be 5.0years. The 100-year time horizon global warming potential of CF3CF2OCH3 is estimated to be 585. The atmospheric impact of CF3CF2OCH3 is discussed.
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