Densities and Excess Volumes of the 1,3-Dimethylimidazolium Methylsulfate + Methanol System at Temperatures from (313.15 to 333.15) K and Pressures from (0.1 to 25) MPa

• Published in: Journal of chemical and engineering data Vol. 52; no. 5; pp. 1830 - 1837
• Main Authors: Gołdon, Andrzej, Da̧browska, Karolina, Hofman, Tadeusz
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 13.09.2007
• Subjects: Chemical thermodynamics; Chemistry; Exact sciences and technology; General and physical chemistry; Mixtures; Thermodynamic properties; Thermal expansion; Compressibility; Molar volume; Binary system; Alcohol; Excess parameter; Thermodynamic properties; Density; Physical properties; Ionic liquid; Methanol
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je700188w

Densities of pure 1,3-dimethylimidazolium methylsulfate ionic liquid [MMIM][CH3SO4] and its mixtures with methanol have been measured with an accuracy of ±0.2 kg·m-3 over a temperature range from (313.15 to 333.15) K and a pressure range from (0.1 to 25) MPa using a vibrating tube densimeter. The isothermal compressibilities, isobaric expansivities, and excess volumes have been calculated. The uncertainties of these properties have been estimated to be ±0.05 GPa-1, ±0.2·10-4 K-1, and ±0.1 cm3·mol-1. The exceptionally strong influence of pressure and temperature on the excess volumes has been observed.