新しいカールフィッシャー電量試薬によるケトン類及び低級カルボン酸類中の水分の定量

概要

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A new odorless Karl Fischer coulometric reagent was tested for determining the moisture in ketones and lower carboxylic acids. The mixture of aminopyridine compound and dipyridyl compound was used as odorless amine, instead of pyridine. Coulometric reagent which contains methanol produces water by reacting with ketones or lower carboxylic acids. Therefore the moisture contained in them can not be determined by such a reagent. Methanol-free coulometric reagent was studied for avoiding these interfering reactions. The mixture of chloroform and ethylene glycol monomethyl ether was found to be the most suitable solvent of the reagent for determining the moisture in ketones and lower carboxylic acids. Determination of moisture in ketone and lower carboxylic acids was feasible even at room temperature.
社団法人日本分析化学会の論文
1985-03-05