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Issue
Korean Journal of Chemical Engineering,
Vol.29, No.10, 1292-1297, 2012
Isothermal and non-isothermal kinetic and safety parameter evaluation of tert-butyl(2-ethylhexyl)monoperoxy carbonate by differential scanning calorimetry
Chen LY, Su CH, Chuang KY, Lin CP, Yu SW, Tseng JM
Tert-butyl(2-ethylhexyl)monoperoxy carbonate (TBEHC) 95 mass% is intrinsically a very unstable substance that can induce self-decomposition even under normal atmospheric condition. During storage, TBEHC 95mass% can release an enormous amount of heat if the temperature is higher than the recommended storage temperature, due to the self-accelerating reaction having been ignited. In this study, TBEHC 95mass% was tested by differential scanning calorimetry (DSC) under five heating rates (1, 2, 4, 6, and 8 ℃/min) and four isothermal conditions (120, 125, 130, and 135 ℃) to evaluate the basic kinetic and safety parameters of time to maximum rate (TMR), self-accelerating decomposition temperature (SADT), and temperature of no return (TNR). Under runaway reaction TBEHC 95 mass% releases a great quantity of heat. This study establishes an important guiding principle for related manufacturing processes worldwide.
Keywords: Tert-butyl(2-ethylhexyl)monoperoxy Carbonate (TBEHC); Differential Scanning Calorimetry (DSC); Kinetic and Safety Parameters; Runaway Reaction
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