论文部分内容阅读
硝化反应是芳香族有机物的重要反应之一,在工业方面,硝化工程也是一个重要的单元作业,由于这个反应所得的产物——硝基物在有机物中占一大类,诸凡染料、炸药、医药等中间体皆属之,所以芳香族硝基物的测定在有机分析中也占一相当位置。测定硝基物的方法很多,最常用的是下列几种:(一)将硝基物用已知浓度的氯化亚锡盐酸液还原为胺类,然后再以氧化剂(碘液或高锰酸钾液)反滴,由于还原剂的消耗量来计算硝基物的含量,或硝基的百分数。(二)以三氯化钛为还原剂将硝基物还原为胺类,剩余的还原剂以铁矾液反
Nitrification is one of the important reactions of aromatic organic compounds. In the industrial field, nitrification is also an important unit operation. As a result of this reaction, the nitro compounds constitute a large group of organic compounds, and all kinds of dyes, explosives, Pharmaceutical intermediates belong to the same, so the determination of aromatic nitro compounds in organic analysis also occupies a considerable position. There are many ways to determine nitro compounds, the most commonly used are the following: (a) the nitro compounds with known concentrations of stannous chloride hydrochloride acid solution is reduced to amines, and then oxidant (iodine or permanganate Potassium solution) is dripped and the content of nitroxide, or the percentage of nitro group, is calculated as the consumption of reducing agent. (B) of titanium trichloride as a reducing agent to reduce nitro compounds to amines, the remaining reducing agent to iron alum liquid anti