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The Hydroxyl Radical Reaction Rate Constant and Products of Ethyl 3-Ethoxypropionate by J. Steven Baxley; Michael V. Henley; J. R. Wells is a Chemistry article available to read on EtoBox.

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The relative rate technique has been used to measure the hydroxyl radical (OH) reaction rate constant of ethyl 3-ethoxypropionate (EEP, CH 3 CH 2 -O -CH 2 CH 2 C(O)O -CH 2 CH 3 ). EEP reacts with OH with a bimolecular rate constant of (22.9 Ϯ 7.4) ϫ 10 Ϫ12 cm 3 molecule Ϫ1 s Ϫ1 at 297 Ϯ 3 K and 1 atmosphere total pressure. In order to more clearly define EEP's atmospheric reaction mechanism, an investigation into the OH ϩ EEP reaction products was also conducted. The OH ϩ EEP reaction products and yields observed were: ethyl glyoxate (EG, 25 Ϯ 1% HC( " O)C( " O) -O -CH 2 CH 3 ), ethyl (2-formyl) acetate (EFA, 4.8 Ϯ 0.2%, HC( " O) -CH 2 -C( " O) -O -CH 2 CH 3 ), ethyl (3-formyloxy) propionate (EFP, 30 Ϯ 1%, HC( " O) -O -CH 2 CH 2 -C( " O) -O -CH 2 CH 3 ), ethyl formate (EF, 37 Ϯ 1%, HC( " O)O -CH 2 CH 3 ), and acetaldehyde (4.9 Ϯ 0.2%, HC( " O)CH 3 ). Neither the EEP's OH rate constant nor the OH/EEP reaction products have been previously reported. The products' formation pathways are discussed in light of current understanding of oxygenated hydrocarbon atmospheric chemistry.

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Author

J. Steven Baxley; Michael V. Henley; J. R. Wells

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0538-8066)

Published

1997

Language

EN

Field

Chemistry (Physical Sciences)