Density, sound velocity and refractive index in the water + 1,2-dimethoxyethane system

作者：del Carmen Grande Maria; Alvarez Julia Jorge; Raquel Barrero Carmen; Miguel Marschoff Carlos

来源：Physics and Chemistry of Liquids, 2015, 53(3): 403-417.

DOI：10.1080/00319104.2014.990964

• binary solutions
• thermal expansion coefficient
• refractive index
• isentropic compressibility
• partial molar volumes
• density
• sound velocity

Density, sound velocity and refractive index of binary mixtures of water+1,2-dimethoxyethane mixtures were measured over the whole composition range and at the temperature interval from 293.15 to 323.15K. Obtained density data for the pure components agree, within experimental error, with published values. However, in the case of binary mixtures, strong discrepancies with values calculated from the equation proposed in the literature for this system are found.
Excess functions, isentropic compressibility coefficients and thermal expansion coefficients were calculated from experimental data. Partial molar volumes were obtained employing the exponential representation previously proposed by us which shows better results than the usual polynomial approach.
Results are discussed on the grounds of the molecular characteristics obtained from Raman and NMR spectroscopy determinations on this system.

• 出版日期2015-5-4