This document specifies the requirements, test methods, inspection rules, marking and accompanying documents, packaging, transportation and storage of dimethylformamide. This document is applicable to the waste liquid produced by the synthesis of cephalosporins, meropenems, avermectins, and penicillins in the pharmaceutical industry as raw materials, and the recycled dimethylformamide obtained through pretreatment, distillation and other processes. Used in chemical production.