Solubility of solid pentane, 2-methylbutane, and cyclopentane in liquid argon at 87.3 K

The solubilities of solid pentane, 2-methylbutane (isopentane), and cyclopentane in liquid argon at 87.3 K have been measured by the filtration method. The C-5 hydrocarbon content in solution was determined using gas chromatography. The solubilities of the Cg hydrocarbons in liquid argon at 87.3K vary from 0.61 x 10(-7) mole fraction for cyclopentane, to 1.37 x 10(-7) mole fraction for pentane, and 8.83 x 10(-6) mole fraction for 2-methylbutane. The Preston-Prausnitz method was used for calculation of the solubilities of solid C-5 hydrocarbons in liquid argon in the temperature range 84-110 K and in liquid nitrogen in the range 64-90K. The values of the solvent-solute interaction constant l(12) were also calculated.