Methyl ethyl ketone peroxide (MEKPO), the topic material, has been extensively applied as an and cross-linker during polymerization, but it has also induced many severe accidents on a global Therefore, the purpose of this study was to deeply understanding the basic characteristics of reactions of MEKPO and mixed with acetone. The innovative objective of an isothermal kinetic is to determine the basic characteristics of reactive chemicals in order to prevent a serious accident. Therefore, we endeavored to demonstrate the reaction model and kinetic parameters, as activation energy (E-a), frequency factor (A), and so on, by the thermal activity monitor III (TAM III) under three isothermal conditions of 70, 80, and 90 degrees C, in terms of MEKPO 31 mass% and with 99 mass%. The results showed that MEKPO could liberate a great quantity of heat during reaction. Moreover, acetone could alleviate the degree of exothermic runaway while being added MEKPO. (C) 2010 Elsevier B.V. All rights