公开(公告)号：BR0107816A

公开(公告)日：2002-10-29

申请号：BR0107816

申请日：2001-01-12

Applicant: BASF AG

Inventor： AUER HEINZ ,  BESSLING BERND ,  HAMMER HANS ,  HASSE HANS ,  SAUER FRIEDERICH ,  ADRIAN TILL ,  VICARI MAXIMILIAN

IPC: C07C51/09 ,  C07C51/44 ,  C07C51/48 ,  C07C53/02

Abstract: The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is produced by hydrolysis of methyl formate, with the methanol content in the methyl formate having been reduced in advance. The process according to the invention has the special feature that-before the hydrolysis of the methyl formate-the methanol content of the methanol-containing methyl formate is reduced in a distillation column, this distillation column simultaneously being employed for other separation functions during work-up of the formic acid.