Abstract
Abstract Cobos, J.C., Garcia, I., Casanova, C., Roux, A.H., Roux-Desgranges, G. and Grolier, J.-P.E., 1991. Excess heat capacities of 1-butanol + toluene from 298 to 368 K. Fluid Phase Equilibria , 69: 223-233. Excess heat capacities at constant atmospheric pressure C E P of the binary system 1-butanol + toluene have been determined at 298.15 K, 323.15 K, 348.15 K and 368.15 K. The instrument used was a programmable differential scanning calorimeter based on the Calvet principle. The C E P decrease from 298.15 K to 323.15 K for mole fractions of the alcohol less than ~ 0.2, and increase for higher concentrations. From 323.15 K to 368.15 K the C E P decrease with increasing temperature. A negative region at low mole fractions of 1-butanol appears when the temperature is increased.
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