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Excess molar volumes and refractive indices of mixtures formed by acetates with sunflower oil at different temperatures
Author(s) -
González Cristina,
Resa José M.,
Lanz Juan,
Fanega M. Angeles
Publication year - 2002
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-002-0518-2
Subject(s) - refractive index , isopropyl , molar , molar volume , sunflower oil , chemistry , mixing (physics) , analytical chemistry (journal) , materials science , thermodynamics , organic chemistry , biochemistry , physics , optoelectronics , quantum mechanics , medicine , dentistry
The aim of this work is to measure the densities and refractive indices of mixtures formed of acetates (ethyl, vinyl, propyl, isopropyl, and butyl acetate) with sunflower oil. From these measurements, excess molar volumes and variations of the refractive index of the mixtures have been calculated. The properties were measured at temperatures varying from 288.15 to 298.15 K. The excess molar volumes and variations of refractive index data were correlated vs. composition with Redlich‐Kister polynomials. Densities of the mixtures were predicted by the Rackett and modified Rackett equations. Refractive indices of the mixtures were predicted by several mixing rules and compared with experimental values. In all cases, SD between predicted and experimental data were less than 5%.