赤外線吸収スペクトルによる医薬品の分析研究(第9報) : 補償法によるナフトール異性体混合物の定量
1967 年 87 巻 6 号 p. 736-738
詳細
1967 年 87 巻 6 号 p. 736-738
An infrared spectrophotometric method is proposed for a rapid determination of a small amount of β-naphthol in α-naphthol or α-naphthol in β-naphthol, by the use of a compensation technique. Carbon disulfide is chosen as a solvent in both cases, and key bands used for β-naphthol and α-naphthol are 743 and 768 cm-1, and each component can be determined up to 0.1% and 0.5%, respectively. It was clarified that the absorption intensities of the CH out-of-plane bending bands in β-naphthol were influenced by the formation of an intermolecular hydrogen bonding.
