Rate coefficients for decay of C₁₂ α-AHs derived from α-Tp ozonolysis in ethanol:water solutions at pH 4.5 at different temperatures^a.

Temperature (K)	k pH 4.5 (s−1)	τ 1/e (minutes)
288	(7.2 ± 0.5) × 10−4	23
293	(1.1 ± 0.2) × 10−3	15
298	(1.8 ± 0.2) × 10−3	9
303	(2.3 ± 0.3) × 10−3	7

^aExperimental conditions: [α-Tp]₀ = 1 mM, [NaCl]₀ = 0.2 mM, [O₃]₀ = 0.06 mM, pH 4.5. The k values are means ± SDs for three independent experiments. τ_1/e = 1/k.