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Author(s):   Malanca, F.E.; Fraire, J.C.; Arguello, G.A.
Title:   Kinetics and reaction mechanism in the oxidation of ethyl formate in the presence of NO2: Atmospheric implications
Journal:   J. Photochem. Photobiol. A Chem.
Volume:   204
Page(s):   75 - 81
Year:   2009
Reference type:   Journal article
Squib:   2009MAL/FRA75-81

Reaction:   HC(O)OC2H5 + ·ClHCl + CH3CH2OC(O)·
Reaction order:   2
Reference reaction:   HC(O)OC2H5 + ·Cl → Products
Reference reaction order:   2
Temperature:   298 K
Pressure:  1.00 bar
Rate expression:   4.5x10-1±5.0x10-2
Category:  Experiment
Data type:   Derived from fitting to a complex mechanism
Pressure dependence:   None reported
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Direct photolysis
Time resolution:   By end product analysis
Analytical technique:   Fourier transform (FTIR)
Comments:   The mechanism for the Cl-initiated oxidation of ethyl formate (EF) has been determined in the presence of NO2. The Cl atom initiates the oxidation mainly at two different sites of the molecule; one corresponds to the H-atom abstraction on the carbon atom in the alpha-position of the oxygenated carbonylic group (62±7)% and the second to the H-atom on the carbonylic group (44±5)%. The quantification of products, within experimental uncertainties, accounts for the complete disappearance of EF. The attack of Cl atoms to the methyl group, if occurring at all, should provide for less than (2±1)%.

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