EQUILIBRIUM PHASE PROPERTIES OF CARBON DIOXIDE NORMAL-HEPTANE SYSTEM

Vapor and liquid equilbrium phase compositions have been determined for the carbon dioxide-n-heptane system at temperatures of 99.5, 175, 250, 399.3 ΔF at several pressures between the vapor pressure of n-heptane and the critical pressure of the system. Refractive Index measurements were made on n-heptane at temperatures of 100, 175, 250 ΔF and on the equilibrium vapor and liquid phases at each experimental pressure at 99.5, 175, 250 ΔF. These measurements were used with the phase composition data to calculate the equilibrium phase densities using the Lorentz-Lorenz molar refractivity relationship. © 1978, American Chemical Society. All rights reserved.