Thermodynamic properties of (a propyl ester + an n-alkane) at 298.15 K II. {xC3H7CO2C3H7 + (1 − x)n-CmH2m + 2}, (m = 6 to 10)

Abstract

Excess molar enthalpies HmE and excess molar volumes VmE of (propyl butanoate + an n-alkane) at 298.15 K and atmospheric pressure are presented for the n-alkanes C6 to C10 over the whole mole-fraction range. Values of HmE were determined using a Calvet microcalorimeter, and of VmE from densities measured with a vibrating-tube densimeter. The HmE and VmE values are all positive, increasing with the length of the n-alkane chain. The experimental results are compared with the predictions of several group-contribution models.