Density and Viscosity of the Binary Mixture of Triethylene Glycol Monoethyl Ether Water from (293.15 to 333.15) K at Atmospheric Pressure.

As part of our systematic program on the thermodynamic study of an aqueous solution of glycol ethers, this work reports new measurements of densities and viscosities for the binary liquid mixture of triethylene glycol monoethyl ether (CH3CH2(OCH2CH2)3OH) water as a function of composition in the temperature range from (293.15 to 333.15) K at atmospheric pressure. Densities were determined using a capillary pycnometer. Viscosities were measured with an Ubbelohde capillary viscometer. From the experimental data, the excess molar volumes, VE, and viscosity deviations, δη, were calculated. These data have been correlated by the Redlich−Kister type equations to obtain their coefficients and standard deviations. The results suggest that the molecular interaction between triethylene glycol monoethyl ether and water is stronger than that of diethylene glycol monoethyl ether and water. [ABSTRACT FROM AUTHOR]