Reaction rate, photooxidation

Air photooxidation reaction rate constant of 6.30 x 10-12 cm3 molecule-1 s-1 with hydroxyl radicals and an estimated atmospheric lifetime of 22 h during summer daylight (Altshuller 1991). 

Air photooxidation reaction rate constant of 4.30 x 1012 cm3 moL1 s-1 with hydroxyl radical with half-life of 2.4-24 h (Damall et al. 1976 Lloyd et al. 1976) ... 

Air atmospheric t,/2 2.4-24 h for C4H10 and higher paraffins for the reaction with hydroxyl radical, based on the EPA Reactivity Classification of Organics (Darnall et al. 1976) photooxidation reaction rate constant of 1.02 x 10-11 cm3 molecule-1 s-1 with OH radical with an estimated lifetime x = 14 h during summer daylight (Altshuller 1991). 

Photolytic. The following rate constants were reported for the reaction of 1,3-butadiene and OH radicals in the atmosphere 6.9 x 10 " cmVmolecule-sec (Atkinson et al., 1979) and 6.7 x lO " cmVmolecule-sec (Sabljic and Glisten, 1990). Atkinson and Carter (1984) reported a rate constant of 6.7-8.4 X 10 " cmVmolecule-sec for the reaction of 1,3-butadiene and ozone in the atmosphere. Photooxidation reaction rate constants of 2.13 x 10 and 7.50 x 10cm /molecule-sec were reported for the reaction of 1,3-butadiene and NO3 (Renter and Schindler, 1988 Sabljic and Glisten, 1990). The half-life in air for the reaction of 1,3-butadiene and NO3 radicals is 15 h (Atkinson et al., 1984a). 

Photolytic. A photooxidation reaction rate constant of 1.74 x 10cmVmolecule-sec was estimated for the reaction of cyclohexanol with OH radicals in the atmosphere (Atkinson, 1987). 

Photolytic. The following rate constants were reported for the reaction of decahydronaphthalene and OH radicals in the atmosphere 1.96 x lO " and 2.02 x 10 " cm /molecule-sec at 299 K for cis and trans isomers, respectively (Atkinson, 1985). A photooxidation reaction rate constant of 2.00 X 10 " was reported for the reaction of decahydronaphthalene (mixed isomers) and OH radicals in the atmosphere at 298 K (Atkinson, 1990). 

Photolytic. The following rate constants were reported for the reaction of hexane and OH radicals in the atmosphere 7.15 x lO cmVmolecule-sec (Atkinson, 1990). Photooxidation reaction rate constants of 7.19 x lO and 1.36 x 10 cmVmolecule-sec were reported for the reaction of heptane with OH and NO3, respectively (Sabljic and Giisten, 1990). Based on a photooxidation rate constant 7.15 x lO cmVmolecule-sec for heptane and OH radicals, the estimated atmospheric lifetime is 19 h in summer sunlight (Altshuller, 1991). 

Photolytic. Based on a reported photooxidation reaction rate constant of 6.80 x 10 cmVmolecule-sec with OH radicals, the half-life of 2-methylhexane is 25 h (Altshuller, 1990). 

Atkinson (1985) reported a photooxidation reaction rate of 5.25 x lO " cmVmolecule-sec for styrene and OH radicals in the atmosphere. A reaction rate of 1.8 x 10 L/molecule-sec at 303 K was reported for the reaction of styrene and ozone in the vapor phase (Bufalini and Altshuller, 1965). 

Cox, R.A., Derwent, R.G., and Williams, M.R. Atmospheric photooxidation reactions. Rates, reactivity, and mechanism for reaction of organic compounds with hydroxyl radicals, Environ. Sci. Technol, 14(1) 57-61, 1980. 

U = 14.41 d based on photooxidation reaction rate with OH radical, indirect photolysis ty, = 14.4 d (Peterson... 

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