ELSEVIER
FluidPhaseEquilibria132(1997) 247-252
Densities of temary mixtures of benzene + cyclohexane + hexane
between 298.15 and 473.15 K
Nasiru M. Tukur, Shafkat A. Beg *
Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Received 29 July 1995; revised 1 September 1996; accepted 17 November 1996
Abstract
The results of measurements of the densities of the ternary mixtures of benzene + cyclohexane + hexane
using a high pressure stainless steel pycnometer system in the whole composition range over a wide variation of
temperature from 298.15 to 473.15 K are presented. The experimental densities were compared with those
predicted by the Spencer-Danner-modified Rackett equation (SDR) and the Hankinson-Brobst-Thompson
correlation (HBT). The SDR showed an average absolute deviation of 0.33% while the HBT predicted the
densities of the mixtures with an average absolute deviation of 0.75%. © 1997 Elsevier Science B.V.
Keywords: Experiments;Densities; Ternary mixtures
1. Introduction
Accurate and reliable data on the density of fluids and fluid mixtures play an important role in a
variety of engineering problems. This is true particularly for those solvents commonly used in
industrial processes.
In this article, the densities of ten ternary mixtures of benzene + cyclohexane + hexane were
measured over a wide temperature range of 298.15 to 473.14 K. The experimental density data were
then compared with predictions made by the Spencer-Danner-modified Rackett equation (Spencer
and Danner, 1972) and the HBT correlation (Hankinson and Thompson, 1979).
* Corresponding author.
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