VISCOSITY AND CONDUCTANCE MICELLAR STUDIES IN MOLTEN PYRIDINIUM CHLORIDE

Viscosity and conductance measurements in cetyldimethylbenzylammonium chloride solutions in molten pyridinium chloride are in agreement with other studies that indicate that micellization commences at 0.06–0.07m at 155°. Effective molal volumes, bulk viscosities, and equivalent conductivities for this system and a comparison system (anilinium chloride as solute), have been calculated. The data suggest that around 0.12m the micelles are stabilized in a size distribution comprised mainly of asymmetric micelles. Molten pyridinium chloride behaves ultrasonically as an associated liquid. The densities and viscosities of 0.5M KCl sucrose solutions (25–40% sucrose) are also supplied as calibration data for electroviscometers in the range 2–5 cP. © 1969, CSIRO. All rights reserved.