A new correlation for the prediction of refractive index and liquid densities of 1-alcohols

•We develop a new generalized correlation of the refractive index of 1-alcohols.•We consider six different semi-theoretical relationships between the refractive index and the density of 1-alcohols.•We have successfully correlate the density of 1-alcohols including methanol and ethanol.•The liquid de...

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Bibliographic Details
Published in:Fluid phase equilibria 2015-02, Vol.387, p.117-120
Main Authors: Cano-Gómez, José J., Iglesias-Silva, Gustavo A., Rico-Ramírez, Vicente, Ramos-Estrada, Mariana, Hall, Kenneth R.
Format: Article
Language:English
Subjects:
1-Alcohols
Carbon
Correlation
Density
Deviation
Eykman equation
Mathematical analysis
Methyl alcohol
Refractive index
Refractivity
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Summary:•We develop a new generalized correlation of the refractive index of 1-alcohols.•We consider six different semi-theoretical relationships between the refractive index and the density of 1-alcohols.•We have successfully correlate the density of 1-alcohols including methanol and ethanol.•The liquid density equation depends upon the number of carbon atoms and the temperature.•We have tested the extrapolative capacity of the new equations. This paper presents a new correlation for the refractive index of 1-alcohols. The correlation relies upon a linear behavior with temperature from (293 to 353)K. This correlation uses the carbon number as a variable, and the universal constants result from curve fits of 117 experimental refractive index measurements for 1-alcohols from methanol to 1-decanol. The new equation correlates the refractive index within an average absolute percentage deviation of 0.05%. The correlation for the density also uses the temperature, the carbon number and the refractive index as variables. The new density equation correlates the density of 1-alcohols from (159 to 373)K within an average absolute percentage deviation of 0.08%. The extrapolative ability of both equations agrees with the data within the experimental error.
ISSN:0378-3812
1879-0224
DOI:10.1016/j.fluid.2014.12.015