The surface tension of dimethyl ether has been measured with a differential capillary rise technique. Thirty-two experimental data points have been obtained in the temperature range from (213 to 368) K. The uncertainty of temperature is less than (10 mK (ITS-90). The uncertainty of surface tension measurements was estimated to be less than (0.2 mN‚m -1 . The results were correlated as a function of temperature.
The surface tensions of mixtures of diesel oil or gasoline and dimethoxymethane, dimethyl carbonate, or ethanol were measured at ambient pressure with surface tension laser light scattering (SLLS) method. The uncertainties were estimated to be less than (2.0%. The results were correlated as a function of compositions, and the excess surface tensions were provided also.
The densities, surface tensions, and viscosities were measured at 301.15 K for the blends of {diesel plus diethyl apidate (DEA)}, {diesel plus diethyl carbonate (DEC)}, {diesel plus diglyme (DGM)}, {diesel plus dimethyl carbonate (DMC)}, and {diesel plus dimethoxymethane (DMM)}. On the basis of the experimental data, the excess thermodynamic properties, including excess densities, excess surface tensions, and excess viscosities, were determined as functions of mass fractions over the entire composition range. Furthermore, polynomial correlations were fitted for the excess thermodynamic properties.
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