N,N-二(1-甲基庚基)乙酰胺(以下简称N-503)系我所研制的一种新型工业萃取剂。它用甲庚醇作原料,经常压通氢氨解成二(1-甲基庚基)胺,然后用醋酐乙酰化制成。1974年由上海市治理三废办公室组织我所与有关工厂协作,将其用于废水脱酚,试验效果良好;1975年7月,对我所实验厂扩大试制N-503的工艺及脱酚应用进行了鉴定,并确定由上海市化工局七·二一大学扩大生产,以满足推广应用的需要。几年来,经过无锡焦化厂、贵池钢厂、上海东风农药厂、上海染化三厂、五厂等单位的生产实践和试验 N, N-bis (1-methylheptyl) acetamide (hereinafter referred to as N-503) is a new type of industrial extraction agent developed by us. It uses heptanol as a raw material, often pressed through the hydrogen ammonia solution into di (1-methylheptyl) amine, and then acetylated with acetic anhydride. In 1974, Shanghai Municipal Wastewater Management Office was organized to collaborate with the relevant factories and use it for wastewater phenol removal. The test was effective. In July 1975, I experimented with expanding the trial production of N-503 and dephenolization in our pilot plant Identified, and identified by the Shanghai Municipal Chemical Industry University 2121 University expanded production to meet the needs of popularization and application. Over the past few years, after Wuxi Coking Plant, Guichi Steel, Shanghai Dongfeng Pesticide Factory, Shanghai Dyeing Third Plant, Wuchang and other units of production practice and test