Some relative rate experiments have been carried out at room temperature and at atmospheric pressure. This concerns the OH-oxidation of some oxygenated volatile organic compounds including methanol (k 1 ), ethanol (k 2 ), MTBE (k 3 ), ethyl acetate (k 4 ), n-propyl acetate (k 5 ), isopropyl acetate (k 6 ), n-butyl acetate (k 7 ), isobutyl acetate (k 8 ), and t-butyl acetate (k 9 ). The experiments were performed in a Teflon-film bag smog chamber. The rate constants obtained are (in ):cm molecule s k ϭ (0.90 Ϯ 0.08) ϫ 10 ; k ϭ (3.88 Ϯ 0.11) ϫ 1 2 Ϫ12 Ϫ12 Ϫ12 Ϫ12 10 ; k ϭ (2.98 Ϯ 0.06) ϫ 10 ; k ϭ (1.73 Ϯ 0.20) ϫ 10 ; k ϭ (3.56 Ϯ 0.15) ϫ 10 ; 3 4 5 and Ϫ12 Ϫ12 Ϫ12k ϭ (3.97 Ϯ 0.18) ϫ 10 ; k ϭ (5.78 Ϯ 0.15) ϫ 10 ; k ϭ (6.77 Ϯ 0.30) ϫ 10 ; k ϭ 6 7 8 9The agreement between the obtained rate constants and some previ- Ϫ12(0.56 Ϯ 0.11) ϫ 10 . ously published data has allowed for most of the studied compounds to point out a coherent group of values and to suggest recommended values. Atmospheric implications are also discussed.