Excess Volumes of Binary Mixtures Containing Diisopropyl Ether + 1-Butanol or Diisopropyl Ether + Diethyl Ketone and Ethanol + Heptane at High Pressures

Abstract

Excess molar volumes VE of diisopropyl ether with 1-butanol were measured at pressures of 0.1 MPa, 20 MPa, 40 MPa, and 60 MPa and at temperatures of 278.15 K, 298.15 K, and 323.15 K; mixtures of diisopropyl ether + diethyl ketone, at 278.15 and 298.15 K. VE is negative for all the mixtures studied over the whole concentration range and for all temperatures. Excess molar volumes VE of ethanol with heptane were measured at 298.15 K and 0.1 MPa, 20 MPa, and 60 MPa. VE is positive in all mixtures studied. Results were correlated by polynomial equations of the type VE = x1x2∑iAi(2x1 − 1)i.