有機微量分析に関する研究 (第7報)
メトキシル基およびエトキシル基の識別定量法
1960 年 80 巻 1 号 p. 25-29
詳細
1960 年 80 巻 1 号 p. 25-29
A new method is described by which the determination of methoxyl and ethoxyl groups and the distinction of their kind are carried out simultaneously. In this method, the alkyl iodide formed by hydrolysis of a sample with hydriodic acid is introduced into a combustion tube and burned with platinum contact in air stream. Iodine and carbon dioxide are formed quantitatively, the former is absorbed by a silver gauze, the latter by a carbon dioxide absorption tube, and weighed. From the molar ratio between the carbon dioxide and iodine, the kind of alkoxyl groups is distinguished. From the weight of iodine, content of the alkoxyl groups is determined.
