Thermodynamic Properties of n-Alkoxyethanols + Organic Solvent Mixtures. XI. Total Vapor Pressure Measurements for n-Hexane, Cyclohexane or n-Heptane + 2-Ethoxyethanol at 303.15 and 323.15 K

• Published in: Journal of chemical and engineering data Vol. 45; no. 4; pp. 699 - 703
• Main Authors: Carmona, F. Javier, González, J. Antonio, García de la Fuente, Isaias, Cobos, José Carlos, Bhethanabotla, Venkat R, Campbell, Scott W
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 13-07-2000
• Subjects: Chemical thermodynamics; Chemistry; Exact sciences and technology; General and physical chemistry; Mixtures; Thermodynamic properties; Hydroxyether; Hydrocarbon; Vapor pressure; Binary system; Cyclohexane; Activity coefficient; Second virial coefficient; Hexane; Experimental study; Thermodynamic properties; Heptane
• ISSN: 0021-9568; 1520-5134
• DOI: 10.1021/je990292n

Total vapor pressures at 303.15 and 323.15 K were measured for binary systems of n-hexane, cyclohexane, or n-heptane + 2-ethoxyethanol. Measurements were made with a Van Ness type apparatus and were fitted to the modified Margules equation using Barker's method. The five-parameter modified Margules equation represents the measurements to within an average absolute deviation of approximately 0.01 kPa. The measurements reveal positive deviations from Raoult's law. Mixtures with n-heptane and cyclohexane show azeotropic behavior at both temperatures.