Kinetics of the reactions of naphthalene, 2‐methylnaphthalene, and 2,3‐dimethylnaphthalene with OH radicals and with O3 at 295 ± 1 K

The kinetics of the gas‐phase reactions of naphthalene, 2‐methylnaphthalene, and 2,3‐dimethylnaphthalene with O3 and with OH radicals have been studied at 295 ± 1 K in one atmosphere of air. Upper limit rate constants for the O3 reactions of <3 × 10−19, <4 × 10−19, and <4 × 10−19 cm3 molecule−1 s−1 were obtained for naphthalene, 2‐methylnaphthalene, and 2,3‐dimethylnaphthalene, respectively. For the OH radical reactions, rate constants of (in units of 10−11 cm3 molecule−1 s−1) 2.59 ± 0.24, 5.23 ± 0.42, and 7.68 ± 0.48 were determined for naphthalene, 2±methylnaphthalene, and 2,3‐dimethylnaphthalene, respectively. These data show that under atmospheric conditions these naphthalenes will react mainly with the OH radical, with life‐times due to this reaction ranging from ca. 11 h for naphthalene to ca. 4 h for 2,3‐dimethylnaphthalene.