Densities and Volumetric Properties of Water + 1,3-Dioxolane Mixtures at Temperatures of (274.15 to 323.15) K and Ambient Pressure

The densities of the binary mixture {water (1) + 1,3-dioxolane (2)} were measured using a vibration density meter over the entire range of compositions in the temperature range from (274.15 to 333.15) K at atmospheric pressure. The excess molar volumes, molar isobaric temperature expansions of the mixture, and apparent and partial molar volumes of water and 1,3-dioxolane, including their limiting values, were calculated. The obtained results were compared with the literature data and with those having similar properties of aqueous mixtures of other simple cyclic ethers: oxolane and 1,4-dioxane. The formation of the water + 1,3-dioxolane mixture was shown to be accompanied by a volume decrease at all temperatures. The addition of ether to water led to a negative shift in the temperature corresponding to the maximum mixture density. The concentration dependencies of the partial molar volumes of 1,3-dioxolane were characterized by the absence of a minimum at low concentrations of cyclic ether in the mixture. The limiting partial molar volumes of water and 1,3-dioxolane were smaller than the respective molar volumes and increased as the temperature increased. The temperature coefficient of the limiting molar isobaric expansion of water in 1,3-dioxolane was positive, which indicated that the temperature increase made the solvate shell larger. The negative temperature coefficient of the limiting molar isobaric expansion of 1,3-dioxolane indicates the destruction of the water structure in the immediate environment of the cyclic ether molecule.