title: Kinetics and products of the reaction of OH radicals with 3-methoxy-3-methyl-1-butanol.
abstract: 3-Methoxy-3-methyl-1-butanol [CH(3)OC(CH(3))(2)CH(2)CH(2)OH] is used as a solvent for paints, inks, and fragrances and as a raw material for the production of industrial detergents. A rate constant of (1.64 ± 0.18) × 10(-11) cm(3) molecule(-1) s(-1) for the reaction of 3-methoxy-3-methyl-1-butanol with OH radicals has been measured at 296 ± 2 K using a relative rate method, where the indicated error is the estimated overall uncertainty. Acetone, methyl acetate, glycolaldehyde, and 3-methoxy-3-methylbutanal were identified as products of the OH radical-initiated reaction, with molar formation yields of 3 ± 1%, 35 ± 9%, 13 ± 3%, and 33 ± 7%, respectively, at an average NO concentration of 1.3 × 10(14) molecules cm(-3). Using a 12-h average daytime OH radical concentration of 2 × 10(6) molecules cm(-3), the calculated lifetime of 3-methoxy-3-methyl-1-butanol with respect to reaction with OH radicals is 8.5 h. Potential reaction mechanisms are discussed.
authors.affiliation: Air Pollution Research Center, University of California Riverside, Riverside, California 92521, USA.
authors.forename: Sara M
authors.initials: SM
authors.lastname: Aschmann
authors.forename: Janet
authors.initials: J
authors.lastname: Arey
authors.forename: Roger
authors.initials: R
authors.lastname: Atkinson
mesh_terms: D000085:Acetates / Q000032:analysis; D000096:Acetone / Q000032:analysis; D017665:Hydroxyl Radical / Q000737:chemistry*; D007700:Kinetics; D000439:Pentanols / Q000737:chemistry*; D012015:Reference Standards
chemical_list: D000085:Acetates; D000439:Pentanols; D000096:Acetone; D017665:Hydroxyl Radical; C046923:methyl acetate