202004harnew0journalOriginalHarris, K. R.[Kenneth R.]Newitt, P. J.[Paula J.]Woolf, L. A.[Lawrence A.]J. Chem. Eng. Data20042004-01-16Temperature and Density Dependence of the Viscosity of CyclopentaneNew measurements have been made for the viscosity of cyclopentane between 258 K and 298 K at pressures up to approximately 380 MPa with a self-centering falling-body viscometer. These extend earlier high-pressure measurements made below 25 MPa by Assael and Dalaouti. A correlation function is used to represent the results as a function of temperature and molar volume with a standard deviation of 0.3%. The uncertainty in the measurements is estimated at 1%.viscositycyclopentanehigh pressure49138-1421cyclopentaneC5H101Commercial source1992Not known2Dried with chemical reagent299.894Gas chromatography299.954Density11Secondary purpose (by-product of other objective)JCEJCE10/20/20031Mass density, kg/m3Vibrating tube methodLiquidDirect value, XLiquidPressure, kPa101.32561Temperature, K1278.1551759.6451283.1551754.7651288.1551749.8551293.1551744.951298.1551739.92511Secondary purpose (by-product of other objective)JCEJCE10/20/20031Viscosity, Pa*sCapillary tube (Ostwald; Ubbelohde) methodLiquidDirect value, XLiquidPressure, kPa101.32561Temperature, K1278.1551.00052341283.1551.000493241288.1551.000465741293.1551.000440541298.1551.0004173411Principal objective of the workJCEJCE10/20/20031Viscosity, Pa*sOtherLiquidDirect value, XLiquid1Temperature, K2Pressure, 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