Bulletin of the Chemical Society of Japan

The Activities of Sodium Salts of 1-Amino-4-alkylaminoanthraquinone-2-sulfonic Acid in Aqueous Solutions

M Mitsuishi, Y Yamaguchi

Index: Mitsuishi; Yamaguchi Bulletin of the Chemical Society of Japan, 1981 , vol. 54, # 3 p. 654 - 656

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Citation Number: 15

Abstract

The mean activity coefficients of sodium salts of 1-amino-4-alkylaminoanthraquinone-2- sulfonic acid (alk= Me (MAS), Et, n-Pr, or n-Bu (n-BAS)) in aqueous solutions ranging in concentration from 10− 3 to 10− 2 mol kg− 1 have been determined by means of isopiestic measurements at 50 and 60° C respectively. It has been found that the mean activity coefficients of these dyes are much smaller than unity, the coefficients of MAS being the ...