DIFFUSION OF METHYL ORANGE AND ITS HOMOLOGS IN WATER AND IN MICELLAR SOLUTION OF DODECYLTRIMETHYLAMMONIUM BROMIDE

Abstract

Diffusion coefficients of Methyl Orange, Ethyl Orange, Propyl Orange, and Butyl Orange in 0.03M NaCl, and 0.025M dodecyltrimethylammonium bromide have been obtained by means of diaphragm diffusion procedures with a Stokes'type cell. In NaCl solution, the radii of diffusion particles of MO, EO, PO, and BO are 4.01, 4.33, 5.05, and 6.02×10-8cm, respectively. Diffusion coefficients of MO and PO in the surfactant solution are 2.15 and 2.24×10-6cm2 sec-1, respectively. MO and PO diffuse with the surfactant micell having about 12×10-8cm radius.