Abstract
The solubility of anthracene in compressed methane, ethylene, ethane, and carbon dioxide has been measured over pressure ranges of 1–100 atm and temperature ranges of 63–185°C. Second cross virial coefficients representing anthracene–gas pair interactions have been evaluated from this data. It is shown that when allowance is made for the effect of the molecular quadrupole moment on the critical constants of carbon dioxide, ordinary combing rules produce pseudocritical parameters which reduce these anthracene–gas cross virial coefficients to a single function of reduced temperature. The functional behavior of these reduced virial coefficients is shown to be the same within experimental error as that exhibited by cross virial coefficients of phenanthrene with many of these same gases.
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