Experimental liquid densities of hexane + benzothiophene mixtures are presented here as a part of a systematic study in order to remove sulfur compounds from Mexican fuels [1-6].

Hexane mixed with other alkanes and benzothiophene will be used as synthetic fuel. Aims of these series of studies are simulating a gasoline or diesel fuel and get basic information to develop a process in which we will be able to remove benzothiophene from this mixture and from Mexican fuels.

A Vibrating Tube Densitometer coupled to a visible sapphire cell was used to perform these measurements. This apparatus has shown to be capable of determine experimental liquid densities of pure compounds and mixtures [1,2].

Experimental densities of hexane measured are in a good agreement with those reported in literature [7-9]. BWRS equation of state was used to fit experimental data and calculate excess molar volumes of mixtures measured [10].

[1] Abel Zúñiga-Moreno, Luis A. Galicia-Luna, Luis E. Camacho-Camacho. Fluid Phase Equilibria, 234 (2005) 151 - 163.

[2] Abel Zúñiga-Moreno, Luis A. Galicia-Luna, Felix F. Betancourt-Cárdenas. Fluid Phase Equilibria, 236 (2005) 193 - 204.

[3] Octavio Elizalde Solis and Luis A. Galicia-Luna. Fluid Phase Equilibria, 236 (2005) 178 - 183.

[4] Verónica Serrano-Cocoletzi, Luis A. Galicia-Luna and Octavio Elizalde Solis. J. Chem. Eng. Data, 50 (2005) 1631 - 1634.

[5] Octavio Elizalde Solis and Luis A. Galicia-Luna. Ind. Eng. Chem. Res., 44 (2005) 5757 - 5760.

[6] Octavio Elizalde Solis and Luis A. Galicia-Luna. Fluid Phase Equilibria, 230 (2005) 51 - 57.

[7] Ivan Cibulka. Fluid Phase Equilibria, 89 (1993) 1-18.

[8] Ivan Cibulka and Lubomir Hnedkovský. J. Chem. Eng. Data, 41 (1996) 657 - 668.

[9] P. Sauermann, Klaus Holzapfel, Jorn Oprzynski, Friedrich Kohler, Wim Poot, Theodoor W. de Loos. Fluid Phase Equilibria, 112 (1995) 249-272.

[10] K. E. Starling, M. S. Han, Hydrocarbon Process., 51 (1972) 129-132.

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