Solubility of gases in liquids. 21. Solubility of He, Ne, Ar, Kr, N-2, O-2, CH4, CF4, and SF6 in 2,2,4-trimethylpentane at T=298.15 K

The Ostwald coefficients L-2,L-1 of He, Ne, Ar, Kr, N-2, O-2, CH4, CF4 and SF6 dissolved in 2,2,4-trimethylpentane (isooctane) have been measured at t he temperature 298.15 K and the pressure 101325 Pa with a modified Ben-Naim /Baer-type apparatus. Subsequently, the L-2,L-1 values are converted to Hen ry fugacities (Henry's law constants) at the vapour pressure of the solvent , and mole fraction solubilities at a partial gas pressure p(2) = 101325 Pa by using the thermodynamically rigorous methods previously given. This imp roved, medium-precision apparatus (the imprecision is about +/- 0.5 per cen t) combines easy handling with automated data retrieval and is totally merc ury-free. (C) 1999 Academic Press.