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Liquid−Liquid Equilibrium and Excess Enthalpies in the Binary System 2-Methylpentane + N,N-Dimethylformamide

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E. Hála Laboratory of Thermodynamics, Institute of Chemical Processes Fundamentals, Academy of Sciences of the Czech Republic, Rozvojová 135, 165 02 Praha 6, Czech Republic
Department of Physical Chemistry, Institute of Chemical Technology, Technická 5, 166 28 Praha 6, Czech Republic
Cite this: J. Chem. Eng. Data 2004, 49, 5, 1318–1322
Publication Date (Web):August 18, 2004
https://doi.org/10.1021/je049953t
Copyright © 2004 American Chemical Society

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    Abstract

    Liquid−liquid equilibrium and excess enthalpies were measured for the binary system 2-methylpentane + N,N-dimethylformamide. Equilibrium data were obtained at different temperatures by the direct analytical and volume methods; points of the binodal curve in the vicinity of the upper critical solution temperature of this system were acquired by means of the cloud-point method. Excess enthalpies were measured at 298.15 K and 313.15 K. Binary data were correlated by the modified Wilson equation. To estimate the critical composition and the upper critical solution temperature, the liquid-phase behavior data were also described by the extended scaling-law equation proposed by Ewing et al.5 The liquid−liquid equilibrium and excess enthalpies in the binary system were predicted by the modified UNIFAC (Dortmund) model so that the prediction could be compared to the experimentally achieved data.

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     To whom correspondence may be addressed:  E-mail:  karel.rehak@ vscht.cz.

    Cited By

    This article is cited by 9 publications.

    1. Cristina Alonso Tristán, Juan Antonio González, Isaías García De La Fuente, and José Carlos Cobos . Thermodynamics of Mixtures Containing a Very Strongly Polar Compound. 10. Liquid–Liquid Equilibria for N,N-Dimethylacetamide + Selected Alkanes. Journal of Chemical & Engineering Data 2013, 58 (8) , 2339-2344. https://doi.org/10.1021/je400487e
    2. Juan Lobos,, Ismael Mozo,, Marta Fernández Regúlez,, Juan Antonio González,, Isaías García de la Fuente, and, José Carlos Cobos. Thermodynamics of Mixtures Containing a Strongly Polar Compound. 8. Liquid−Liquid Equilibria for N,N-Dialkylamide + Selected N-Alkanes. Journal of Chemical & Engineering Data 2006, 51 (2) , 623-627. https://doi.org/10.1021/je050428j
    3. Luís Fernández, Juan Ortega, Jaime Wisniak. Assessment of liquid–liquid equilibrium data by solving the Gibbs‐Duhem equation. AIChE Journal 2022, 68 (5) https://doi.org/10.1002/aic.17630
    4. Fariba Safa, Asghar Alizadeh Dakhel, Shahab Shariati. Predictive Artificial Neural Network Model for Solvation Enthalpy of Organic Compounds in N,N-Dimethylformamide. Russian Journal of Physical Chemistry A 2019, 93 (13) , 2661-2668. https://doi.org/10.1134/S0036024419130260
    5. P. Venkatesu. Thermophysical contribution of N,N-dimethylformamide in the molecular interactions with other solvents. Fluid Phase Equilibria 2010, 298 (2) , 173-191. https://doi.org/10.1016/j.fluid.2010.07.010
    6. Barbora Volejníková, Štěpán Hovorka, Karel Řehák, Lidmila Bartovská. Temperature and composition dependence of excess Gibbs energy in the system of tetraglyme (1) + decane (2): Evaluation by simultaneous correlation of limiting activity coefficients, liquid–liquid equilibrium, and calorimetric data. Fluid Phase Equilibria 2009, 283 (1-2) , 65-72. https://doi.org/10.1016/j.fluid.2009.05.019
    7. Christina Mintz, Katherine Burton, Tara Ladlie, Michael Clark, William E. Acree, Michael H. Abraham. Enthalpy of solvation correlations for organic solutes and gases dissolved in N,N-dimethylformamide and tert-butanol. Journal of Molecular Liquids 2009, 144 (1-2) , 23-31. https://doi.org/10.1016/j.molliq.2008.09.002
    8. Hiroyuki Matsuda, Daisuke Taniguchi, Junichi Hashimoto, Kiyofumi Kurihara, Kenji Ochi, Kazuo Kojima. Determination and correlation of liquid–liquid equilibria for four binary N,N-dimethylformamide+hydrocarbon systems. Fluid Phase Equilibria 2007, 260 (1) , 81-86. https://doi.org/10.1016/j.fluid.2007.03.010
    9. Magdalena Bendová, Karel Řehák, Jaroslav Matouš, Josef P. Novák. Liquid–liquid equilibrium in ternary systems N,N-dimethylformamide + 2-methylpentane + methanol and N,N-dimethylformamide + methylcyclohexane + methanol. Fluid Phase Equilibria 2006, 239 (1) , 16-25. https://doi.org/10.1016/j.fluid.2005.09.025

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