TEMPERATURE AND CHAIN-LENGTH DEPENDENCE OF THE VOLUMETRIC PROPERTIES OF 1-CHLOROBUTANE ALKANE MIXTURES

The excess volumes of 1-chlorobutane-n-alkane mixtures have been measured at several temperatures and over the entire composition range. The chain-length and the temperature dependence are non-monotonic, and might indicate the existence of structure-making and structure-breaking effects. Two generalized van der Waals equations of state using a hard convex body-repulsive contribution have been used. The equations lead to satisfactory fits of the V(E) vs. x curves, although they fail to predict the chain-length and temperature dependence. However, the pressure dependence of V(E) for nC6-nC16 at 298.15 K is predicted satisfactorily.