After mixing, the reactor (No.: etf052) is cooled to 25 ± 5 ℃, the dichloromethane in the reactor is put into the waste liquid barrel through the process pipeline, loaded, weighed and marked for waste liquid treatment.
At the end of stirring, after the reaction kettle (No.:ETF052) is cooled to 25 5℃, the dichloromethane in the kettle is put into the waste liquid barrel through the process pipeline, and the barrel is weighed and marked for waste liquid treatment.