Purification of sulfuryl fluoride

US6143269A · kind A · utility

Assignee

• SOLVAY FLUOR und DERIVATE GmbH · DE

Inventors

• Alf Schulz · Großburgwedel, DE
• Matthias Rieland · Hannover, DE
• Lothar Zipfel · Laatzen, DE
• Thomas Born · Holle, DE
• Eckhard Hausmann · Garbsen, DE

Key dates

• Filing date: Jul 29, 1999
• Grant date: Nov 7, 2000
• Expiry date: Jul 29, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/80
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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.