Abstract
Refractive indices have been measured for the binary liquid mixtures of n-butylethanoate and 3- methylethanoate with cyclohexane, benzene, 1,4-dimethylbenzene and 1,3,5-trimethylbenzene over the entire composition range at 308.15K . From the experimental data, the values of deviation in refractive index (Δn), molar refraction (R) and deviation in molar refraction (ΔR) have been determined. The values of Δn and ΔR have been fitted to the Redlich Kister polynomial equation to determine the standard deviation.
Highlights
Physical properties of several esters in their binary mixtures have been already reported [1,2,3,4,5,6,7,8]
It shows that the order of refractive index for binary mixtures of n-butylethanoate and 3-methylbutylethanoate with hydrocarbons is
Experimental n values are used to evaluate molar refraction, R for all the binary mixtures studied by equation: R = [x1M1 + x2 M2/ ] [(n2-1)/n2+2]
Summary
Physical properties of several esters in their binary mixtures have been already reported [1,2,3,4,5,6,7,8]. Studies in this regard for the determination of refractive indices of the binary mixtures of n-butylethanoate and 3-methylbutylethanoate at 308.15K are still lacking. In our laboratory refractive index studies have been made on binary systems of bromoalkanes and cyclohexane and aromatic hydrocarbons. Literature reveals that binary systems of esters and aromatic hydrocarbons have rarely been studied employing refractive index measurements.
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