Torsional crystal technique for the measurement of viscosities of liquids at high pressure

Abstract

The damping effect of a viscous medium on a torsionally vibrating quartz crystal has been used to measure the viscosities of liquids at high pressures. Results have been obtained for benzene, cyclohexane, carbon tetrachloride, isopentane and n-pentane at temperatures of 30 or 50°C and pressures up to 7000 kg cm^–2 in systems where the liquid did not freeze. Good agreement with existing high pressure data for these systems is obtained.