EFFECT OF PRESSURE ON THE VISCOSITY OF AQUEOUS CESIUM-CHLORIDE SOLUTION AT 25-DEGREES-C

Viscosity of aqueous cesium chloride (CsCl) solution was measured in t he range of 0.1-5.0 mol kg(-1) and 0.1-375 MPa at 25 degrees C. The Jo nes-Dole B coefficient of CsCl was obtained from the concentration dep endence of the viscosity. It is negative not only at atmospheric press ure but also at high pressure, having a maximum against pressure at ab out 160 MPa. Similar maximum of the B was observed for aqueous sodium chloride (NaCl) solution. The similarity is discussed in terms of the water structure and dielectric friction theory.