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wen du dui zuo liang fa fen xi 4- xiao ji jian jia fen han liang de ying xiang
Author(s): 
Pages: 19
Year: Issue:  3
Journal: Agrochemicals

Keyword:  温度低硫代硫酸钠标准溶液间甲酚溴量法硝基中间体控制分析杀螟松溴酸钾理论依据;
Abstract: <正> 4-硝基间甲酚是制备杀螟松农药的一个重要中间体。目前国内农药厂常采用溴量法测定4-硝基间甲酚的含量。此法简便、快速、不需特殊仪器与试剂,适用于工厂控制分析。其理论依据是在过量溴的存在下,4-硝基间甲酚与溴生成′4-硝基-2,6-二溴间甲酚。溴是在酸存在下由溴酸钾-溴化钾产生的。剩余的溴被碘化
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