Static and dynamic viscosities in the binary mixture nitrobenzene— n -hexane near a critical point

Ultrasonic shear data are reported for the binary mixture nitrobenzene---n-hexane in the homogeneous phase above tc. The observed dispersions at frequencies of 51 and 3 kHz have been compared with the predictions of a modified form of the Deutch and Zwanzig theory, together with data on the behavior of static viscosity.