Volumetric and thermal excess properties of the {(1,2-dichloroethane or 1,4-dichlorobutane) + n-dodecane systems}

Abstract

In this work, the excess molar volume, the excess isobaric thermal expansivity, the excess isentropic and isothermal compressibility, and the excess isobaric and isochoric heat capacity for the (1,2-dichloroethane or 1,4-dichlorobutane+n-dodecane) systems are reported as a function of temperature at 0.1MPa. To this end, densities and speeds of sound from 278.15K to 328.15K were measured using a vibrating tube densimeter and sound analyser, and isobaric heat capacities from 283.15K to 323.15K were determined using differential scanning calorimetry. All these measurements were combined within an appropriate methodology in order to obtain the excess quantities. Results were discussed in terms of the well-known microscopic phenomena describing these systems.