Excess Molar Volumes and Viscosities of Binary Liquid Mixtures of Ethylene Glycol Diethyl Ether + Ethylene Glycol Monomethyl, + Diethylene Glycol Monomethyl, + Triethylene Glycol Monomethyl Ethers at 298.15 and 308.15 K

Abstract

Excess molar volumes and viscosities η of the binary liquid mixtures of ethylene glycol diethyl ether (1,2-diethoxyethane), C2H5OC2H4OC2H5, with ethylene glycol monomethyl ether (2-methoxyethanol), CH3OC2H4OH, diethylene glycol monomethyl ether (2-(2-methoxyethoxy)ethanol), CH3(OC2H4)2OH, and triethylene glycol monomethyl ether (2-[2-(2-methoxyethoxy)ethoxy]ethanol), CH3(OC2H4)3OH, have been measured at 298.15 and 308.15 K and at atmospheric pressure as a function of composition. From these results deviations of the viscosity from a mole fraction average have been calculated. Both the excess molar volumes and viscosity deviations for all the mixtures were negative over the entire composition range. Excess molar volumes and viscosity deviations have been correlated with the Redlich−Kister equation to estimate the coefficients and standard errors. The experimental and calculated quantities are used to discuss the mixing behavior of the components.