Production of pure acetyl chloride

US4209460A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Alexander Ohorodnik · Lechenich, DE
• Eberhard Auer · Lechenich, DE
• Klaus Gehrmann · Lechenich, DE

Key dates

• Filing date: Dec 28, 1978
• Grant date: Jun 24, 1980
• Expiry date: Dec 28, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C51/64
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Pure acetyl chloride containing less than 1 ppm of phosphorus is produced. To this end, crude acetyl chloride containing phosphorus compounds is intimately contacted with 1 to 20 liters of gaseous chlorine per liter of liquid crude acetyl chloride and the acetyl chloride so contacted with chlorine is subjected to fractional distillation.