Thermodynamics of mixtures containing amines. XIV. CpmE of benzylamine with heptane at 293.15 K or with methanol, 1-propanol or 1-pentanol at 293.15–308.15 K

Abstract Molar excess heat capacities, C pm E , are reported for the benzylamine + heptane mixture at 293.15 K and for methanol, 1-propanol or 1-pentanol + benzylamine systems at 293.15–308.15 K. These values were determined from isobaric molar heat capacities obtained with a Setaram Micro DSC II microcalorimeter using a scanning method. The heptane solution shows a W-shaped C pm E concentration dependence, which reveals the existence of strong non-random effects. Systems including 1-alkanols are characterized by large and positive C pm E values. This remarks that self-association and/or solvation effects are predominant in such solutions. On the other hand, their C pm E curves are skewed towards higher mole fractions of the alcohol, which might be ascribed to the existence of more interactions between unlike molecules in that region.