Abstract
The rates of thermal and photochemical reactions of butyral-dehyde with nitrogen dioxide were measured. A least squares treatment of the data yielded a thermal rate constant of 10 to the 7.4 times base e to the minus 12,400/ (molar gas constant times absolute temperature), where the rate constant was expressed per liter-mol sec. The rate constant for the reaction of oxygen atoms with butyraldehyde was 1.5 times 10 to the 8/liter-mole sec at 25/sup 0/C. The results were close to those for lower molecular weight aldehydes and indicated that all the aldehydes up to butyraldehyde may be treated by means of one general mechanism, involving dependency on the aldehydic C-H bond energy.
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