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提出并考察了利用氯乙酸生产过程的副产母液与硫脲进行选择性反应，生产假硫脲基乙酸及纯度较高的二氯乙酸。较合适的工艺条件为：反应温度６０～７０℃；反应时间１．５ｈ；硫脲与氯乙酸的摩尔比为１∶１．
It is proposed and investigated that the by-product mother liquor and thiourea in the production process of chloroacetic acid are selectively reacted to produce pseudo-thiourea-acetic acid and high-purity dichloroacetic acid. The suitable process conditions are as follows: the reaction temperature is 60 ~ 70 ℃; the reaction time is 1.5h; the molar ratio of thiourea to chloroacetic acid is 1: 1.