Abstract:

A large amount of sulfuryl fluoride (SO₂F₂) is released into the atmosphere after fumigation, intensifying the greenhouse effect. Therefore, it is important to remove SO₂F₂ generated in fumigation. In this study, the solubilities of SO₂F₂ in 2-butoxyethyl acetate (BOEA), 3-methoxybutyl acetate (MOBA), 2-methoxyethyl acetate (MOEA), 1-methoxy-2-propyl acetate (MOPA), and 2-(2-ethoxyethoxy)ethyl acetate (DEOEA) were determined at T = (293.15 to 323.15) K and pressures up to about 600 kPa using the isochoric saturation method. Results showed that SO₂F₂ solubility in the five acetate derivatives increased with increasing pressure and decreased with increasing temperature. The dissolution of SO₂F₂ in these solvents belonged to a physical process. Furthermore, the Henry’s law constants and thermodynamic properties including standard Gibbs free energy, enthalpy, and entropy changes of SO₂F₂ dissolution were further obtained. Compared with water, these five selected acetate derivatives showed potential application for SO₂F₂ removal. Moreover, the solubilities of SO₂F₂ in these solvents followed the order of MOBA > MOPA > BOEA > DEOEA > MOEA.

*Original article titled, Solubilities of Sulfuryl Fluoride in 2-Butoxyethyl Acetate, 3-Methoxybutyl Acetate, 2-Methoxyethyl Acetate, 1-Methoxy-2-propyl Acetate, and 2-(2-Ethoxyethoxy)ethyl Acetate, online at https://pubs.acs.org/doi/10.1021/acs.jced.8b00224

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