公开(公告)号：US3781374A

公开(公告)日：1973-12-25

申请号：US3781374D

申请日：1972-12-11

Applicant: NITRO NOBEL AB

Inventor： RAGNVALD FOSSAN K

IPC: C07C201/16 ,  C07C79/14

CPC classification number: C07C201/16 ,  C07C205/02

Abstract: A METHOD FOR THE ISOLATION OF TETRANITROMETHANE FROM A SOLUTION OF NITRIC ACID WITH COMPARATIVELY LOW CONTENTS OF TETRANITROMETHANE IS DISCLOSED ACCORDING TO WHICH METHOD A MIXTURE COMPRISING TETRANITROMETHANE AND NITRIC ACID IS SUBJECTED TO DISTILLATION TO CAUSE AN AZEOTROPIC MIXTURE OF 30% OF TETRANITROMETHANE AND 70% OF HNO3 TO EVAPORATE, WHEREAFTER THE DISTILLATE CONSISTING OF THE AZEOTROPIC MIXTURE IS ADDED WITH WATER IN ORDER TO BREAK THE AZEOTROPE.