DMC can be used as carbonylation agent replacing phosgene in synthesis of polycarbonate, isocyanate and insecticide carbaryl as well as methylating agent replacing carcinogen dimethyl sulfate in synthesis of methylphenate. DMC可作为羰基化试剂代替剧毒物质光气用于合成聚碳酸酯、异氰酸酯、杀虫剂西维因等,用作甲基化试剂代替致癌物硫酸二甲酯合成苯甲醚。