Density Measurements for Ethane, Carbon Dioxide, and Methane + Nitrogen Mixtures from 300 to 470 K up to 137 MPa Using a Vibrating Tube Densimeter Academic Article uri icon


  • 2016 American Chemical Society. This paper presents experimental p--T measurements for nitrogen + methane mixtures containing approximately 0.25, 0.50, and 0.75 mole fraction methane at T = 300, 350, 400, and 470 K with p = 10-137 MPa. Methane, nitrogen, and argon are used as calibration fluids, and measurements on carbon dioxide and ethane verify the calibration methodology. An error contribution analysis indicates that the expanded uncertainty (95% confidence limit) is 0.1 kgm-3 for densities lower than 200 kgm-3 and 0.0005 for higher densities. The GERG-2008 equation of state describes the measurements for all three mixtures to within 0.0015 with the largest deviations occurring at the highest pressures.

published proceedings

  • Journal of Chemical & Engineering Data

author list (cited authors)

  • Gomez-Osorio, M. A., Browne, R. A., Carvajal Diaz, M., Hall, K. R., & Holste, J. C.

citation count

  • 4

complete list of authors

  • Gomez-Osorio, Martin A||Browne, Robert A||Carvajal Diaz, Mauricio||Hall, Kenneth R||Holste, James C

publication date

  • August 2016