Two impurities, 1-ethoxymethoxy butane and 2-chloro-N-(2,6-diethyl-phenyl)acetamide, for which the Food and Agriculture Organization (FAO) of the United Nations has established tolerance limits, were found in the butachlor technical sample.

• 推断结果可知,丁草胺原药中存在联合国粮农组织对丁草胺原药有限量的杂质成分二丁氧基甲烷和2-氯-N-(2,6-二乙基苯基)乙酰胺。