A kinetic mechanism of oxidation and combustion of CH3CHO - O-2 mixtures is
proposed. Calculations by this mechanism of oxidation and two-stage self-i
gnition of acetaldehyde - oxygen mixtures fit the available experimental da
ta quite satisfactorily. The kinetic mechanism is used to depict propagatio
n of a steady cool flame in this mixture. The cool flame model suggested is
shown to be valid for practical computations.