Abstract
Adiabatic or accelerating rate calorimetry and differential scanning calorimetry (DSC) are both used for the study of runaway reactions. The application of DSC is limited to the study of solids and homogeneous liquid mixtures and generally no information is obtained on pressure development. Adiabatic calorimetry is laborious and time consuming. This paper describes the development of the Shell-modified Sikarex calorimeter as a versatile screening tool for runaway reactions, combining advantages of both techniques. Its construction facilitates the study of multiphase systems. A case history on the treatment of an organic mixture with nitric acid demonstrates a few of the unique properties of the instrument.
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