Abstract

The enthalpies of sublimation of naphthalene, benzoic acid and phenanthrene have been determined by isothermal operation of a DSC, coupled to a vacuum system. The results obtained by this method are in excellent agreement with those reported in the literature from established procedures. The precision obtained was found to be dependent on the rate of sublimation. This paper describes the experimental procedure, calibration, the corrections applied and comparison of the results, mainly with those obtained by dynamic experiments in DSC.

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