A full mathematical description of thermodynamic analysis of Accelerating Rate Calorimeter data is given in THT Technical Information Sheet No. 20. This is relatively simple though materials that show complex overlapping reactions will cause difficulties. To obtain reliable heat of reaction information the exotherm must be tracked adiabatically. Reactions which have mechanism change to yield spontaneous explosivetype reaction with rates of self- heating 100°C/min to 1000°C/min can not be followed adiabatically. Heats of reaction obtained for these types of reaction will be low, the error
maybe 10% to 50%. But it is easy to get the heat of reaction of Di-tertiary butyl peroxide, DTBP, for example.
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Reference:
ARC Technical Information Sheet No. 10, Thermal Hazard Technology, UK
