Ionic B coefficients in water at 30, 40 and 50 °C

Abstract

Viscosity measurements of aqueous solutions of sodium chloride, sodium bromide, sodium iodide, sodium perchlorate, sodium tetraphenylborate, tetraphenylphosphonium bromide, tetrabutylammonium bromide and tri-isoamylbutylammonium iodide at 30, 40 and 50 °C are reported. By means of a new method for separating the viscosity B coefficients of the Jones–Dole equation based on B_BPh^–4=B_PPh⁺4, the ionic values B_± at 30, 40 and 50 °C were calculated. This new method is compared with other separation methods and the variation of the ionic B coefficients with temperature is discussed.