Density,Viscosity,and Surface Tension at 293.15 K and Liquid-Liquid Equilibria from 301.15 K to 363.15 K under Atmospheric Pressure for the Binary Mixture of Diethylene Glycol Diethyl Ether + Water

摘要

Densities,viscosities,and surface tension have been measured as a function of composition for the binary liquid mixture of diethylene glycol diethyl ether ± water at 293.15 K under atmospheric pressure.Densities were determined using a capillary pycnometer.Viscosities were measured with a Ubbelohde capillary viscometer.Surface tension was measured by means of the drop-volume technique.The estimated uncertainties of the measurements were (+-)0.1% for density,(+-)0.3% for viscosity,and (+-) 0.04 mN m~(-1) for surface tension.Liquid-liquid equilibrium data were also measured for the binary mixture in the temperature range from 301.15 K to 363.15 K.The compositions of both the top and bottom phases were analyzed by gas chromatography.