Spectrophotometric study of the effect of sodium dodecyl sulphate on the acid-base behaviour of 4-(2-pyridylazo)-resorcinol

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Title:Spectrophotometric study of the effect of sodium dodecyl sulphate on the acid-base behaviour of 4-(2-pyridylazo)-resorcinol
Creators:
Bílý, Jiří
Čermáková, Ludmila
Knapp, Jiří
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 56, 4, pp. 785-795

Abstract

The values of the apparent dissociation constants of the azo dye 4-(2-pyridylazo)-resorcinol (PAR) have been found in the presence of sub- and supercritical concentrations of the anionogenic tenside sodium dodecyl sulphate (SDS) and the effects of the strong electrolytes NaCl and NaNO<sub>3</sub> were also evaluated. In both electrolytes, the p<i>K</i><sub>an</sub> values initially are independent of the SDS concentration and then increase. Spectrophotometric and surface tension measurements were employed to determine the critical micelle concentration (cmc) of SDS alone and in the presence of PAR and the given electrolytes. The determined cmc values were in the range 0.20–3.02 mmol l<sup>-1</sup> and dependent on the type and concentration of the particular additive.

Title:Spectrophotometric study of the effect of sodium dodecyl sulphate on the acid-base behaviour of 4-(2-pyridylazo)-resorcinol
Creators:
Bílý, Jiří
Čermáková, Ludmila
Knapp, Jiří
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:56
Number:4
Page Range:pp. 785-795
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19910785UNSPECIFIED
ID Code:4996
Item Type:Article
Deposited On:22 Feb 2010 11:28
Last Modified:22 Feb 2010 10:28

Citation

Bílý, Jiří; Čermáková, Ludmila; Knapp, Jiří (1991) Spectrophotometric study of the effect of sodium dodecyl sulphate on the acid-base behaviour of 4-(2-pyridylazo)-resorcinol. Collection of Czechoslovak Chemical Communications, 56 (4). pp. 785-795. ISSN 0010-0765

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