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公开(公告)号:NO144419B
公开(公告)日:1981-05-18
申请号:NO763448
申请日:1976-10-08
Applicant: BASF AG
Inventor: BUELOW HORST , HOHENSCHUTZ HEINZ , SCHMIDT JOHANNNES E , SACHSZE WERNER
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公开(公告)号:NO144419C
公开(公告)日:1981-08-26
申请号:NO763448
申请日:1976-10-08
Applicant: BASF AG
Inventor: BUELOW HORST , HOHENSCHUTZ HEINZ , SCHMIDT JOHANNNES E , SACHSZE WERNER
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公开(公告)号:CA1062647A
公开(公告)日:1979-09-18
申请号:CA262623
申请日:1976-10-04
Applicant: BASF AG
Inventor: BUELOW HORST , HOHENSCHUTZ HEINZ , SCHMIDT JOHANNES E , SACHSZE WERNER
Abstract: Formic acid is purified by extractive distillation of its aqueous solutions using a basic extractant, followed by distillation of the bottom mixture first obtained, the extractant used being N-formylmorpholine.
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