Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1256326 | Chinese Chemical Letters | 2007 | 4 Pages |
Abstract
The acid–base properties of 1-(2-thiazolylazo)-2-naphthol (TAN) in mixtures of methanol–water at 25 °C 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 pKa 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.
Related Topics
Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Ali Niazi, Ateesa Yazdanipour, Majid Ramezani,