The densities of binary mixtures consisting of methanol, ethanol, 1-propanol, 1-butanol and 1-pentanol with 1,3-propanediol were measured at the temperatures 293.15, 298.15, 303.15 and 313.15 K and at atmospheric pressure. Measurements were made over the full range of compositions and for the pure compounds using a vibrating tube densimeter. Excess molar volumes were obtained from these experimental results and were fitted to a Redlich– Kister type expansion. The results were interpreted in terms of molecular interactions and structural factors of the alcohols. It was observed that an increase in the carbon chain length of the alcohol led to lower interactions on mixing. The Peng–Robinson–Stryjek–Vera (PRSV) Equation of state was used to correlate the binary excess molar volumes.
