The solubility of sulfur dioxide and hydrogen sulfide in associating solvents

Abstract

Abstract The solubilities of SO 2 are reported in the solvents N, N ‐dimethyl acetamide (DMA), N, N ‐dimethyl formamide (DMF), ethyl acetate, acetonitrile, chlorobenzene, methanol, (1,2‐ethanediol) ethylene glycol and acetone for atmospheric pressure and for temperatures ranging from 268 K to 333 K (‐5°C to 60°C). Solubilities of H 2 S are also reported for the first five of the above‐mentioned solvents and for hexane for similar conditions. These gases and solvents exhibit extreme molecular interactions which are reflected in unusual solubility behavior. This paper is a continuing attempt in providing data and analyses for improving the understanding of gas solubilities in complex gas‐solvent systems. Solubilities expressed as hydrogen‐bonding factors have been found useful in systematically relating gas solubilities in one associating or reacting solvent to another chemically similar solvent. Thus, with a limited amount of data for gas solubilities, it is often possible to predict solubilities even in highly associated or reacting gas‐solvent solutions.