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US 6,143,269 AGranted
Purification of sulfuryl fluoride
AssigneeSolvay Fluor und Derivate GmbH
InventorsAlf Schulz, Matthias Rieland, Lothar Zipfel, Thomas Born, Eckhard Hausmann
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Abstract
Sulfuryl fluoride (SO.sub.2 F.sub.2) frequently contains chlorine, sulfur dioxide and other acidic impurities owing to its production. Effective purification is possible if the sulfuryl fluoride is contacted with hydrogen peroxide or a precursor thereof, preferably in an aqueous solution. The purified product is suitable as a pesticidal agent, for example.
Claims6
A process for the preparation of purified sulfuryl fluoride, comprising contacting impure sulfuryl fluoride with hydrogen peroxide or a precursor thereof, thereby obtaining purified sulfuryl fluoride.
Dependencies are inferred from the claim text.