Densities and volumetric properties of methyl isobutyl ketone + alkanols (C 1–C 4) at different temperatures

Abstract

The densities of methyl isobutyl ketone (MIBK) + methanol, MIBK + ethanol, MIBK + propan-1-ol, MIBK + propan-2-ol, MIBK + butan-1-ol and MIBK + butan-2-ol have been measured for the whole range of composition at temperatures ranging from 298.15 K to 308.15 K in 5 K intervals and atmospheric pressure, using an Anton Paar model DMA 4500 oscillating densimeter. The excess molar volume ( V m E), partial molar volume ( V¯ i ) and excess partial molar volumes ( V¯ i E) of binary mixtures were calculated from the density data. The temperature dependence of the thermodynamic properties in the temperature range of 298.15 K to 308.15 K has been shown. The excess molar volumes were correlated with the Redlich−Kister polynomial. The excess molar volumes are negative for methanol, ethanol, propan-1-ol, butan-1-ol and inversion of sign in V m E is observed for ethanol at 308.15 K and rich concentration in MIBK, and positive for propan-2-ol and butan-2-ol. It was found that excess molar volumes in the systems increase with increasing temperature.