E. Kiran et al., VOLUMETRIC PROPERTIES OF PENTANE PLUS CARBON-DIOXIDE AT HIGH-PRESSURES, Journal of chemical and engineering data, 41(2), 1996, pp. 158-165
The volumetric behavior of carbon dioxide + pentane has been investiga
ted at 323, 348, 373, 398, and 423 K at pressures up to 70 MPa using a
variable-volume view cell. Densities for pure components and fluid mi
xtures containing 10, 20, 35, 50, 62, 72, 80, and 88% by weight carbon
dioxide are presented as a function of pressure at each temperature.
With increasing pressure (above 20 MPa) the density of carbon dioxide
becomes greater than that of pentane, and mixture densities show a cro
ssover with composition. At a given temperature and pressure, under a
majority of the conditions evaluated, the excess volume for the mixtur
es shows a sigmoidal variation with composition, being negative at low
carbon dioxide content and becoming positive with increasing carbon d
ioxide content. With increasing pressure, excess volumes become less n
egative.