The paper has systemly studied the exist of all kinds of poisons,and influenced thiophanate-methyl function of catalytic compose,and the suitable technology parameter and condition has been screend.

• 系统研究了各种毒物（杂质）的存在对甲基硫菌灵催化合成性能的影响，对比筛选出适宜的工艺参数及条件，对提高甲基硫菌灵的合成收率及产品纯度给出了毒物含量的上限，对相关原料提出了质量标准。