Spectrophotometric determination of acidity constants of 4-(2′-thiazolylazo)-resorcinol (TAR) in water-organic mixtures

作     者：Ali Benvidi Fatemeh Heidari M.Mazloum Ardakani Ali Mohammad Hajishabani Jahanbakhsh Ghasemi 

作者机构：Department of ChemistryYazd UniversityYazdIran Department of ChemistryKhajeh Nasir Toosi University of TechnologyIran 

出 版 物：《Chinese Chemical Letters》 (中国化学快报(英文版))

年 卷 期：2010年第21卷第6期

页      面：725-729页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

主　　题：TAR DATAN Principal component analysis Acidity constants Binary solvents 

摘      要：The acidity constants of TAR in different water-organic solvent binary mixtures at 25℃have been determined spectrophotometrically. DATa ANalysis（DATAN） program was used for calculations of the acidity constants and pure spectra of all formed species and their concentration distribution diagram in applied pH *** show that there are a fairly inverse relationship between acidity constants and the mole fraction of the organic solvent in the binary *** of solvent composition on the pK;s and pure spectrum of each component are also discussed.