Excess volumes and isobaric heat capacities of diisopropyl ether with several alkanols at 298.15 K -: Application of the symmetrical extended real associated solution model

Excess molar volumes v E and isobaric heat capacities C-p(E) at 298.15 K were measured for I I mixtures of diisopropyl ether (DIPE) + alcohol (from methanol to 1-undecanol), DIPE with n-heptane and 2,4-dimethylpentane with 1-octanol. Moreover the excess molar enthalpy h(E) of DIPE with n-heptane at the same temperature was also measured in order to obtain the self-association parameters of the symmetrical extended real associated solution (SERAS) model for DIPE. Parameters of the SERAS model corresponding to the interaction of DIPE with each alcohol were obtained by fitting nu(E) data reported here and h(E) data taken from a previous work. The results obtained are compared with those from the literature obtained by using the ERAS model in the traditional way for several of the studied mixtures. C-p(E) curves are qualitatively explained in terms of the SERAS model. (C) 2003 Elsevier B.V. All rights reserved.