Sequeira, Maria CarolinaAvelino, Helena Maria Da Nóbrega TeixeiraCaetano, Fernando J. P.Fareleira, João2022-01-132022-01-132022-01-13SEQUEIRA, Maria C. M.; [et al] – Viscosity and density measurements on liquid n-heptadecane at high pressures. Journal of Chemical and Engineering Data. ISSN 0021-9568. Vol. 67, N.º 1 (2021), pp. 37-44.0021-9568http://hdl.handle.net/10400.21/14155This article reports novel measurements of the viscosity, eta, of liquid n-heptadecane at pressures up to 70 MPa, along six isotherms between 303 and 358 K. The experiments were carried out using a vibrating wire viscometer operated in the forced mode. The 303 and 313 K isotherms have a restricted range of pressures to avoid eventual solidification. The present measurements have an uncertainty less than U(eta) = 0.015.eta with a confidence level of 0.95. Complementary measurements of the density, rho, were performed with the same ranges of temperature and pressure, using a DMA HP Anton Paar U-tube densimeter, with a DMA 5000 instrument as a reading unit. The overall maximum uncertainty is U(rho) = 0.002.rho with a confidence level of 0.95. The article provides a correlation of the viscosity of compressed liquid n-heptadecane with the molar volume, constructed by means of a scheme based on a modified hard-sphere theory, which describes the experimental data within ca. 1%. A program is provided in the Supporting Information to promptly perform interpolation of the viscosity as a function of temperature and pressure. The isothermal compressibility and the isobaric thermal expansivity were calculated from the density. Viscosity-pressure coefficients have also been determined from the viscosity.engn-heptadecaneViscosityDensityHigh pressuresjournal article10.1021/acs.jced.1c006741520-5134