A process for the preparation of anhydrous acetaldoxime from an aqueous solution by gaseous extration with methylene chloride as extracting agent was studied.

• 研究了以二氯甲烷为萃取剂,利用气相萃取由乙醛肟水溶液制备无水乙醛肟的工艺过程,所得乙醛肟贮存稳定性好,含量在99%25以上,收率达93