Determination of pKa values of some azo dyes in acetonitrile with perchloric acid

被引：29

作者：

Kurtoglu, M

Birbiçer, N

Kimyonsen, Ü

Serin, S ^{[1
]}

机构：

[1] Univ Kahramanmaras Sutcu Imam, Fac Sci Arts, Dept Chem, TR-46100 Kahramanmaras, Turkey

[2] Univ Kahramanmaras Sutcu Imam, Dept Text Engn, TR-46100 Kahramanmaras, Turkey

[3] Baser Colgate, Adana, Turkey

来源：

DYES AND PIGMENTS | 1999年 / 41卷 / 1-2期

关键词：

non-aqueous titrations; potentiometric titrations; basicity order; azo dyes;

D O I：

10.1016/S0143-7208(98)00077-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study, 10(-4) M acetonitrile solutions of 15 azo dyes synthesized by coupling hydroxyl containing compounds such as phenol, 1-naphthol and 2-naphthol with diazonium salts obtained by the diazotisation of aniline and aniline derivatives were determined by potentiometric titration with perchloric acid in acetonitrile at room temperature. The turning points and the half neutralization potentials of these compounds were determined using the potentiometric titration curves obtained in order to calculate their pKa values. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：143 / 147

页数：5

共 24 条

[1] ABETA S, 1991, J SOC DYERS COLOUR, V107, P12
[2] STRUCTURE REACTIVITY CORRELATIONS OF AZO REACTIVE DYES BASED ON H-ACID .2. DYE DEGRADATION BY HYPOCHLORITE
BREDERECK, K
SCHUMACHER, C
[J]. DYES AND PIGMENTS, 1993, 21 (01) : 45 - 66
[3] STRUCTURE-REACTIVITY CORRELATIONS OF AZO REACTIVE DYES BASED ON H-ACID .3. DYE DEGRADATION BY PEROXIDE
BREDERECK, K
SCHUMACHER, C
[J]. DYES AND PIGMENTS, 1993, 23 (02) : 121 - 133
[4] STRUCTURE REACTIVITY CORRELATIONS OF AZO REACTIVE DYES BASED ON H-ACID .1. NMR CHEMICAL-SHIFT VALUES, PKA VALUES, DYESTUFF AGGREGATION AND DYEING BEHAVIOR
BREDERECK, K
SCHUMACHER, C
[J]. DYES AND PIGMENTS, 1993, 21 (01) : 23 - 43
[5] FEDOROV LA, 1987, ZH ANAL KHIM, V10, P1762
[6] Fritz J. S., 1973, ACID BASE TITRATIONS
[7] TITRATION OF BASES IN DIOXANE
FRITZ, JS
[J]. ANALYTICAL CHEMISTRY, 1950, 22 (04) : 578 - 579
[8] OXIDATION BY SINGLET OXYGEN OF ARYLAZONAPHTHOLS EXHIBITING AZO-HYDRAZONE TAUTOMERISM
GRIFFITHS, J
HAWKINS, C
[J]. JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1977, (06): : 747 - 752
[9] TITRATIONS IN NONAQUEOUS MEDIA .4. SOLVENT EFFECTS ON BASICITY OF ALIPHATIC-AMINES
GUNDUZ, T
GUNDUZ, N
KILIC, E
KENAR, A
[J]. ANALYST, 1986, 111 (11) : 1345 - 1347
[10] TITRATIONS IN NONAQUEOUS MEDIA .5. ACID-BASE BEHAVIOR OF SUBSTITUTED 2-AMINO-3-CYANOFURANS, 2-AMINO-3-CYANOTHIOPHENES AND 2-AMINO-3-CYANOPYRROLE AND THEIR SCHIFF-BASES WITH SALICYLALDEHYDE AND 2-HYDROXY-1-NAPHTHALDEHYDE
GUNDUZ, T
KILIC, E
ERTUZUN, V
CETINEL, G
[J]. ANALYST, 1986, 111 (12) : 1439 - 1442

← 1 2 3 →