TY - JOUR
T1 - Experimental densities of hexane + benzothiophene mixtures from (313 to 363) K and up to 20 MPa
AU - Camacho-Camacho, Luis E.
AU - Galicia-Luna, Luis A.
PY - 2007/11
Y1 - 2007/11
N2 - Experimental densities of hexane and hexane + benzothiophene mixtures were obtained via a vibrating tube densimeter. Densities of hexane were measured from (313 to 363) K and pressures up to 25 MPa. For the case of hexane (1) + benzothiophene (2) mixtures, the experiments were performed at five compositions (x\ = 0.0629, 0.2588, 0.4495, 0.7491, and 0.9432) in the same range of temperatures at pressures up to 20 MPa. Uncertainties for measured densities were estimated within 0.2 kg·m-3. The obtained densities of hexane were compared with those values reported in the literature and with the results obtained by the Tait equation and the equation of state proposed by R. Span and W. Wagner (Int. J. Thermophys. 2003, 24, 1-39). These were also correlated with a modified five-parameter Toscani-Szwarc equation (MTS). Good agreement was found in all cases. Excess molar volumes for the mixtures, as well as isothermal compressibilities and isobaric thermal expansivities of hexane, were calculated using the reported parameters for the MTS equation.
AB - Experimental densities of hexane and hexane + benzothiophene mixtures were obtained via a vibrating tube densimeter. Densities of hexane were measured from (313 to 363) K and pressures up to 25 MPa. For the case of hexane (1) + benzothiophene (2) mixtures, the experiments were performed at five compositions (x\ = 0.0629, 0.2588, 0.4495, 0.7491, and 0.9432) in the same range of temperatures at pressures up to 20 MPa. Uncertainties for measured densities were estimated within 0.2 kg·m-3. The obtained densities of hexane were compared with those values reported in the literature and with the results obtained by the Tait equation and the equation of state proposed by R. Span and W. Wagner (Int. J. Thermophys. 2003, 24, 1-39). These were also correlated with a modified five-parameter Toscani-Szwarc equation (MTS). Good agreement was found in all cases. Excess molar volumes for the mixtures, as well as isothermal compressibilities and isobaric thermal expansivities of hexane, were calculated using the reported parameters for the MTS equation.
UR - http://www.scopus.com/inward/record.url?scp=36849083553&partnerID=8YFLogxK
U2 - 10.1021/je7003929
DO - 10.1021/je7003929
M3 - Artículo
SN - 0021-9568
VL - 52
SP - 2455
EP - 2461
JO - Journal of Chemical and Engineering Data
JF - Journal of Chemical and Engineering Data
IS - 6
ER -