By the absorption of active carbon,the dyed polymer and residual dye in EPC solution are removed in order to obtain qualified EPC solution and quitepure agent of acetene carbonate.

• 利用活性炭的吸附作用,将EPC溶液中的染色聚合物及残余染料吸附掉,从而得到符合分析要求的EPC溶液和较纯净的碳酸亚乙酯试剂。