The kinetics of thermal decomposition of 1-decene ozonide has been studied by means of differential scanning calorimetry. It was found that the enthalpy of the reaction DELTAH was 349 +/- 9 kJ mol-1. Values of activation energy, kinetic order, and pre-exponential factor, determined from thermograms, give the following expression for the reaction rate constant : k/(s-1) = 1.66 x 10(15) exp(-129000/RT).