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 C₅ hydrocarbon content in solution was determined using gas chromatography. The solubilities of the C₅ hydrocarbons in liquid argon at 87.3K vary from 0.61 × 10^–7 mole fraction for cyclopentane, to 1.37 × 10^–7 mole fraction for pentane, and 8.83 × 10^–6 mole fraction for 2-methylbutane. The Preston–Prausnitz method was used for calculation of the solubilities of solid C₅ 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.