Density, viscosity, and excess properties of the binary mixture of diethylene glycol monomethyl ether plus water at T = (293.15,303.15,313.15,323.15,333.15) K under atmospheric pressure

Densities and viscosities have been measured as a function of composition for the binary liquid mixture of diethylene glycol monomethyl ether CH3O(CH2)(2)O(CH2)(2)OH + water at T = (293.15, 303.15. 313.15. 323.15, 333.15) K under atmospheric pressure. Densities were determined using a capillary pycnometer, Viscosities were measured with Ubbelohde capillary viscometer. From the experimental data, the excess molar volumes V-E, and viscosity deviations delta eta. and the excess energies of activation for viscous flow Delta G(*E) were calculated. These data have been correlated by the Redlich-Kister type equations to obtain their coefficients and standard deviations. The results suggest that molecular interaction between diethylene glycol monomethyl ether and water is strong. (C) 2009 Elsevier B.V. All rights reserved.