pρTx-property measurements near saturation in the gaseous phase for propane + isobutane

Atsushi Yamaguchi, Mitsuru Mukoubayashi, Tae Matsunami, Haruki Sato

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Abstract

pρTx-property measurements near saturation in the gaseous phase for propane (1) + isobutane (2) at x1 = 0.25 (W1 = 20.19 %), X1 = 0.5 (w1 = 43.14 %), and X1 = 0.80 (w 1 = 75.22 %) are reported. The data near saturation in the gaseous phase are important information for deriving reliable property values such as specific heats near saturation or for determining the second and third virial coefficients. The measurements were performed using a magnetic suspension densimeter. 154 pρTx values for propane + isobutane mixtures were obtained at the temperatures of (303.15 and 323.15) K and for pressures up to 980 kPa. The experimental uncertainties are estimated to be 10 mK for temperature, 0.45 kPa for pressure, (0.03 % + 0.005 kg · m-3) for density, and 0.31 % in mass fraction (0.32 % in mole fraction). The purities of propane and isobutane were both 99.99 % in mass fraction according to the report from the manufacturer. The measurements are used for assessing the reliability of existing equations of state.

Original languageEnglish
Pages (from-to)3273-3275
Number of pages3
JournalJournal of Chemical and Engineering Data
Volume54
Issue number12
DOIs
Publication statusPublished - 2009 Dec 10

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ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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