The efficiency of DBDMH production is 90%with an optimum mol ratio of 1:2:2 of hydantoin: Br2: NaOH.

• 在适宜的反应物配比条件下即海因、溴、氢氧化钠的摩尔比为1:2:2；生成产物二溴海因的产率为90%25.