Excess Molar Volumes and Surface Tensions of Trimethylbenzene + Ethylene Glycol Ester at 298.15 K and 313.15 K

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Abstract

Densities for binary systems of [1,2,4-trimethylbenzene or 1,3,5-trimethylbenzene + ethylene glycol monomethyl ether (2-methoxyethanol) or ethylene glycol dimethyl ether (1,2-dimethoxyethane)] have been determined under normal atmospheric pressure at 298.15 K and 313.15 K over the entire mole fraction range. The excess molar volumes were calculated. Surface tensions of these binary systems have been measured at 298.15 K and 313.15 K by the pendant drop method, and the values of the surface tension deviation were also derived. The excess molar volumes and the values of the surface tension deviation are fitted to the Redlich−Kister polynomial equation. The excess molar volumes for all the binary systems are positive over the whole composition range, and their surface tension deviations are negative.

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