Multiwavelength spectrophotometric determination of acidity constants of 1-(2-thiazolylazo)-2-naphthol in methanol-water mixtures

被引：0

作者：

Ali Niazi

Ateesa Yazdanipour

Majid Ramezani

机构：

[1] Azad University of Arak

[2] Department of Chemistry Faculty of Sciences

[3] Iran

来源：

Chinese Chemical Letters | 2007年 / 08期

关键词：

TAN; Acidity constants; Methanol; Spectrophotometry; DATAN;

D O I：

暂无

中图分类号：

O621.2 [有机化合物性质];

学科分类号：

070303 ; 081704 ;

摘要：

The acid-base properties of 1-（2-thiazolylazo）-2-naphthol （TAN） in mixtures of methanol-water at 25℃and an ionic strength of 0.1 mol/L are studied by a multi-wavelength spectrophotometric method.The acidity constants of all related equilibria are estimated using the whole spectral fitting of the collected data to an established factor analysis model DATAN program was used for determination of acidity constants.The corresponding pK;values in methanol-water mixtures were determined.There is a linear relationship between acidity constants and the mole fraction of methanol in the solvent mixtures.

引用

页码：989 / 992

页数：4

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