Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/53848
Title: Thermodynamic properties of (a propyl ester plus an n-alkane). XII. Excess molar enthalpies and excess molar volumes for {xCH(3)(CH2)(u-1)COO(CH2)(2)CH3+(1-x)CH3(CH2)(2v+1)CH3} with u = (1 to 3), and v = (1 to 7)
Authors: Ortega, J 
Vidal, M
Toledo-Marante, FJ
Placido, J 
Keywords: Interaction Parameters
Unifac Model
Ethanoate
Mixtures
298.15-K
Issue Date: 1999
Publisher: 0021-9614
Journal: Journal of Chemical Thermodynamics 
Abstract: Excess molar enthalpies H-m(E) and excess molar volumes V-m(E) were determined at the temperature 298.15 K for 21 binary mixtures of three propyl esters (ethanoate, propanoate, and butanoate) and seven odd n-alkanes (pentane to heptadecane). All the mixtures exhibited endothermic enthalpies which decreased quasi-exponentially with the ester chain length in the same proportion as their dipole effects. The variations of the excess molar volumes for these mixtures followed a similar decreasing trend, with contractions observed in the systems consisting of high molar mass esters and lowest n-alkanes. These effects have been interpreted on the basis of molecular interactions. The UNIFAC, DISQUAC, and Nitta-Chao models were used to estimate the thermodynamic properties considered, and yielded acceptable results. (C) 1999 Academic Press.
URI: http://hdl.handle.net/10553/53848
ISSN: 0021-9614
Source: Journal Of Chemical Thermodynamics[ISSN 0021-9614],v. 31 (8), p. 1025-1044
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