Solubility of Liquid Organics of Environmental Interest in Subcritical (Hot/Liquid) Water from 298 K to 473 K

The solubilities of benzene, toluene, m-xylene, p-cymene, octane, 2,2,4-trimethylpentane (isooctane), tetrachloroethylene, 1,2-dichlorobenzene, and tetraethyltin were determined at temperatures ranging from 298 K to 473 K. Increasing the temperature up to 473 K increased the solubilities by a factor of ∼10−250. For example, increasing the temperature from 298 K to 473 K increased the mole fraction solubility of tetraethyltin from (0.03 ± 0.002) × 10-7 to (8.8 ± 0.6) × 10-7 but only increased the solubility of benzene from (4.0 ± 0.1) × 10-4 to (41 ± 3) × 10-4. Pressure had a minimal effect; for example, increasing the pressure from 65 to 400 bar at either 298 K or 473 K reduced the solubility of benzene by only ∼20%.