AN EXPLANATION OF THE QUATERNARY AMMONIUM COMPOUND EOSIN-Y EQUILIBRIAIN THE PRESENCE AND ABSENCE OF TRITON X-100

The quaternary ammonium compound (QAC)-Eosin-Y equilibria were examine d in the presence, and absence, of micelles of Triton X-100. At pH 8.0 and 2.2, an ion-pair and molecular associate, respectively, were obse rved between QAC and Eosin. The absorbance of these forms was enhanced by partitioning into micelles of Triton X-100.