Journal ArticleDOI
Mathematical Representation of Thermodynamic Properties. Carbazole Solubilities in Binary Alkane + Dibutyl Ether and Alkane + Tetrahydropyran Solvent Mixtures
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In this article, the Modified Wilson equation was found to be the better two-parameter mathematical representation with deviations between experimental and back-calculated values being on the order of ± 3% or less.Abstract:
Experimental solubilities are reported for carbazole dissolved in binary mixtures containing tetrahydropyran with n-hexane, n-heptane, clyclohexane, isooctane, n-hexadecane and t-butylcyclohexane at 25°C. Results of these measurements, along with published carbazole solubilities in ten alkane + dibutyl ether mixtures, are used to test two mathematical representations based upon the combined Nearly Ideal Binary Solvent (NIBS)/Redlich-Kister equations and Modified Wilson model. For the systems studied, the Modified Wilson equation is found to be the better two-parameter mathematical representation with deviations between experimental and back-calculated values being on the order of ± 3% or less. The NIBS/Redlich-Kister representation requires up to four adjustable “curve-fit” parameters to describe the solubility data.read more
Citations
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Journal ArticleDOI
Review of the cosolvency models for predicting solubility of drugs in water-cosolvent mixtures
TL;DR: The cosolvency models presented from 1960 to 2007 were reviewed and their accuracies for correlating and/or predicting the solubility of drugs in water-cosolvent mixtures were discussed.
Journal ArticleDOI
Mathematical representation of thermodynamic properties: part ii. derivation of the combined nearly ideal binary solvent(nibs)/redlich-kister mathematical representation from a two-body and three-body interactional mixing model
TL;DR: In this paper, a simple two-body and three-body interactional mixing model is used to derive expressions for the mathematical representation of experimental solute solubilities and activity coefficients in binary solvent mixtures.
Journal ArticleDOI
Comparison of models for describing multiple peaks in solubility profiles
TL;DR: In this article, a model derived from the combined nearly ideal binary solvent/Redlich-Kister equation (CNIBS/R-K) for reproducing the experimental solubility curve in mixed solvent systems showing two Solubility maxima is presented.
Journal ArticleDOI
Comparison of various cosolvency models for calculating solute solubility in water-cosolvent mixtures
Abolghasem Jouyban-Gharamaleki,L. Valaee,Mohammad Barzegar-Jalali,Brian J. Clark,William E. Acree +4 more
TL;DR: The combined nearly ideal binary solvent/Redlich-Kister, CNIBS/R-K, was found to be the best solution model in terms of its ability to describe the experimental solubility in mixed solvents.
Journal ArticleDOI
A general model from theoretical cosolvency models
TL;DR: In this paper, it was shown that the two theoretical cosolvency models, i.e., the excess free energy, EFE, and the combined nearly ideal binary solvent/Redlich-Kister, CNIBS/R-K, despite different appearances could be converted to a general single model, GSM, using some appropriate substitutions and rearrangements.
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
Algebraic Representation of Thermodynamic Properties and the Classification of Solutions
Otto Redlich,A. T. Kister +1 more
Journal ArticleDOI
Mathematical representation of thermodynamic properties in binary systems and solution of Gibbs-Duhem Equation
TL;DR: In this article, a critical assessment is made of simple power series expansions and their limitations in representing thermodynamic properties over the entire composition range of a binary system, and the advantages of certain orthogonal series as an alternative method of representation is also discussed.
Journal ArticleDOI
Heats of mixing for binary systems: n-Alkanes + n-Alcohols and n-Alcohols
Rubens S. Ramalho,M. Ruel +1 more
TL;DR: In this paper, the applicability of an extension of the principle of congruence to the data was investigated and the heats of mixing of 23 binary systems were reported at 20, 25 and 30°C.