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众所周知,卡尔·弗休试剂是测定各种物质中微量水的试剂。自从1935年卡尔·弗休提出这个测定水的方法以来,一直采用碘、二氧化硫、吡啶、甲醇四种物质配制而成。并且,国际标准化组织把这个方法定为国际标准,我国也把这个方法定为国家标准。但是,由于吡啶嗅味大、毒性强,所以,最近几年国外在这方面的研究工作进展较快,并且已经有无吡啶试剂商品,国内尚未见到有类似的试制。为了解决这一课题,我们采用二乙醇胺代替吡啶制备一种
It is well-known that Karl Foscher reagents are reagents for the determination of trace amounts of water in various substances. Since 1958 Carl Fowler proposed this method of measuring water, it has been using iodine, sulfur dioxide, pyridine, methanol formulated from four substances. In addition, the International Organization for Standardization sets this method as an international standard, and our country also defines this method as a national standard. However, due to its large odor and strong toxicity, pyridine has made rapid progress in this area in recent years and no pyridine reagent has been commercially available in China. No similar trial has been seen in China. To solve this problem, we used diethanolamine instead of pyridine to prepare one