Liquid viscosities of ethyl caprylate and ethyl caprate at elevated temperatures and pressures

In this work, the high-pressure liquid viscosities of ethyl caprylate and ethyl caprate were measured at the temperatures from 303 K to 362 K and pressures up to 30 MPa. The measurements were carried out based the falling-cylinder viscosity measurement system which was established in our laboratory. The combined expanded relative uncertainty of the present measurement was <0.03 with a confidence level of 0.95. The high-pressure viscosity values were correlated with Andrade-Tait equation. The average relative deviation between experimental data and calculated results from Andrade-Tait equation for ethyl caprylate and ethyl caprate was 0.38% and 0.73%, respectively. The maximum relative deviation was 1.32% and 1.96%, respectively.