Abstract
Accurate density data of binary mixture of diisopropyl ether (DIPE) with acetone are essential for the engineering design and operation of their separation. Densities of acetone+DIPE binary mixtures have been measured over the entire range of composition and at temperatures from (283.15 to 323.15) K under atmospheric pressure. The volume-translated Peng-Robinson equation of state has been applied to predict the densities of the liquid mixtures with an overall average relative deviation of only 0.095%, yielding a substantial improvement to the untranslated Peng-Robinson equation with an average relative deviation over fifty times lower. Excess volumetric properties of excess molar volumes and excess isobaric expansibility coefficients are derived from the experimental density data and well correlated by the Redlich-Kister type polynomial equation. The resultant positive excess volumetric properties confirm the existence of dispersive interactions and dipolar/orientational order change in the binary mixture during mixing.
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