目的研究杀扑磷原药的急性和亚慢性毒性及致突变性，求出最大无作用剂量。
To study the acute and subchronic toxicity and mutagenicity of methidathion and find out its NEL.
研究杀扑磷的合成工艺，采用的合成方法原料便宜，工艺操作简便，易于工业化生产。
The synthesis process of methidathion were studied in this paper. The starting material of this method was cheaper, the synthesis method is simple and was easy to industrialize.
研究杀扑磷的合成工艺，采用的合成方法原料便宜，工艺操作简便，易于工业化生产。
The synthesis process of methidathion were studied in this paper. The starting material of this method was cheaper, the synthesis method is simple and was easy to industrialize.
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