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1. (WO2018219728) PROCESS FOR THE MANUFACTURING OF METHANE SULFONIC ACID

Pub. No.:    WO/2018/219728    International Application No.:    PCT/EP2018/063463
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Thu May 24 01:59:59 CEST 2018
IPC: C07C 303/06
C07C 309/04
Applicants: BASF SE
Inventors: SPIELMANN, Jan
ZEILINGER, Michael
WORTMANN, Juergen
BORGMEIER, Frieder
Title: PROCESS FOR THE MANUFACTURING OF METHANE SULFONIC ACID
Abstract:
The present invention relates to a process for the manufacturing of methane sulfonic acid (MSA) by reaction of a radical initiator composition with methane and sulfur trioxide comprising the steps (a) preparation of the intiator compostion by reacting aqueous hydrogen peroxide with the components methane sulfonic acid and methane sulfonic acid anhydride and (b) reaction of the initiator composition from step (a) with sulfur trioxide and methane to form methane sulfonic acid. The invention further relates to the use of methane sulfonic acid anhydride (MSA anhydride) in said process and to methane sulfonic acid manufactured by said process.