Collect. Czech. Chem. Commun. 1990, 55, 2395-2403

Pycnometric determination of densities and excess volumes of binary mixtures containing at least one associating component

Kamila Chýlková and Ivona Malijevská

Department of Physical Chemistry, Prague Institute of Chemical Technology, 166 28 Prague 6


Densities at 20 °C and molar excess volumes calculated from them are reported in the work for the mixtures of the substances: propionic acid-n-heptane, propionic acid-benzene, trifluoroacetic acid-benzene, propionic acid-cyclohexane, acetic acid-cyclohexane, acetic acid-trifluoroacetic acid, acetic acid-propionic acid, and propionic acid-trifluoroacetic acid. For the last system mentioned, a strange dependence of excess volume on composition was found which is noted for three local extremes. The dependences of excess volume on composition are correlated by the Redlich-Kister polynomial.