Experimental Study of the Density and Viscosity of $$n$$ -Heptane at Temperatures from 298 K to 470 K and Pressure upto 245 MPa
- 11 January 2013
- journal article
- Published by Springer Science and Business Media LLC in International Journal of Thermophysics
- Vol. 34 (1), 1-33
- https://doi.org/10.1007/s10765-012-1373-z
Abstract
The density and viscosity of \(n\) -heptane have been simultaneously measured over the temperature range from 298 K to 470 K and at pressures up to 245 MPa using the hydrostatic weighing and falling-body techniques, respectively. The expanded uncertainty of the density, pressure, temperature, and viscosity measurements at the 95 % confidence level with a coverage factor of \(k= 2\) is estimated to be 0.15 % to 0.30 %, 0.05 %, 0.02 K, and 1.5 % to 2.0 % (depending on temperature and pressure ranges), respectively. The measured densities were used to develop a Tait-type equation of state for liquid \(n\) -heptane. Theoretically based Arrhenius–Andrade and Vogel–Tamman–Fulcher type equations with pressure-dependent coefficients were used to describe the temperature and pressure dependences of the measured viscosities for liquid \(n\) -heptane. The measured values of the density and viscosity were compared in detail with reported data and with the values calculated from a reference EOS and correlation models for the viscosity.
Keywords
This publication has 236 references indexed in Scilit:
- Thermodynamic and acoustic properties of (heptane+dodecane) mixtures under elevated pressuresThe Journal of Chemical Thermodynamics, 2008
- High-pressure densities and derived volumetric properties (excess, apparent, and partial molar volumes) of binary mixtures of {methanol (1)+[BMIM][BF4] (2)}The Journal of Chemical Thermodynamics, 2008
- Densities, excess volumes, isobaric expansivity, and isothermal compressibility of the (1-ethyl-3-methylimidazolium ethylsulfate+methanol) system at temperatures (283.15 to 333.15)K and pressures from (0.1 to 35)MPaThe Journal of Chemical Thermodynamics, 2008
- Mixing properties of binary mixtures presenting azeotropes at several temperaturesThe Journal of Chemical Thermodynamics, 2007
- Excess properties of the binary mixtures of methylcyclohexane+alkanes (C6 to C12) at T=298.15K to T=308.15KThe Journal of Chemical Thermodynamics, 2006
- Thermodynamic and acoustic properties of binary mixtures of alcohols and alkanes. II. Density and heat capacity of (ethanol+n-heptane) under elevated pressuresThe Journal of Chemical Thermodynamics, 2005
- Physical properties of {anisole+n-alkanes} at temperatures between (293.15 and 303.15) KThe Journal of Chemical Thermodynamics, 2005
- Thermodynamics of liquid mixtures consisting of a very polar and a non-polar aromatic: (benzonitrile + benzene, or toluene)The Journal of Chemical Thermodynamics, 1998
- A magnetic-suspension apparatus to measure densities of liquids as a function of temperature at pressures up to 100 MPa Application to n-heptaneThe Journal of Chemical Thermodynamics, 1989
- The Tait equation: 100 years onInternational Journal of Thermophysics, 1988