Product study of the C2H5O2+HO2 reaction in 760 Torr of air at 284–312 K

The title reaction was studied in 1 atmosphere pressure of synthetic air at 284, 298, and 312 K. FTIR spectroscopy was used to identify two products; ethyl hydroperoxide and acetaldehyde. Acetaldehyde was a minor product formed in a yield consistent with that expected from unwanted secondary reactions. In 1 atmosphere pressure of air at 284–312 K the title reaction produces ethyl hydroperoxide in a yield of (104±5)% and acetaldehyde in a yield of (2±4)%. We recommend that in atmospheric models the reaction of C2H5O2 with HO2 radicals be represented by a single-reaction pathway giving C2H5OOH.