Excess volumes for n-alkanols + n-alkanes III. Binary mixtures of hexan-1-ol + n-pentane, + n-hexane, + n-octane, and + n-decane

Abstract

Measurements of excess volumes at 298.15 K in a successive dilution dilatometer are reported for binary mixtures of hexan-1-ol with the n-alkanes C 5, C 6, C 8, and C 10. In this series of mixtures, the excess-volume curves change from sigmoid with positive values in the alkanol-rich region for mixtures with n-pentane, to positive values over the whole mole-fraction range for mixtures with n-decane. The positive region for (hexan-1-ol + n-pentane) occurs below 0.02 mole fraction of C 6H 13OH, and measurements were extended to high alkanol dilutions. Partial molar excess volumes of the components were calculated for each mixture, and their values at infinite dilution were estimated.