Densities and derived thermodynamic properties of binary (alkanol+boldine) mixtures in the compressed liquid region

• Published in: The Journal of chemical thermodynamics Vol. 51; pp. 126 - 131
• Main Authors: Durán-Zenteno, Moisés S., Pérez-López, Hugo I., Galicia-Luna, Luis A., Elizalde-Solis, Octavio
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.08.2012; Elsevier
• Subjects: 1-Propanol; Boldine; Chemical thermodynamics; Chemistry; Derived thermodynamic properties; Ethanol; Exact sciences and technology; General and physical chemistry; General. Theory; Derived thermodynamic properties; Ethanol; 1-Propanol; Boldine
• ISSN: 0021-9614; 1096-3626
• DOI: 10.1016/j.jct.2012.03.003

► We measured densities for {alkanol (ethanol or 1-propanol)+boldine} mixtures. ► Liquid densities are reported in the ranges of (1 to 20)MPa and (313 to 363)K. ► Thermodynamic derived properties were calculated using an empirical correlation. ► Extrapolated densities at atmospheric pressure agree with the literature data. In this work, densities of two binary systems of {alkanol (ethanol and 1-propanol)+boldine} are measured at temperatures from (313 to 363)K and pressures up to 20MPa using an Anton Paar vibrating tube densimeter. Each (alkanol+boldine) system was prepared at five diluted compositions with respect to the alkaloid. These are (x2=0.0012, 0.0074, 0.0136, 0.0196, 0.0267) and (x2=0.0018, 0.0046, 0.0077, 0.0112, 0.0142) mixed in ethanol and 1-propanol, respectively. Experimental densities are correlated using an empirical 6-parameter equation with deviations within 0.04%. Extrapolated densities at atmospheric pressure agree with the literature data. Isobaric expansivity, isothermal compressibility, thermal pressure coefficient, and internal pressure have been calculated.