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The density of gaseous ethane and of fluid methyl chloride, and the vapor pressure of methyl chloride

1981; Elsevier BV; Volume: 13; Issue: 11 Linguagem: Inglês

10.1016/0021-9614(81)90001-x

1096-3626

Hamazasm Mansoorian, Kenneth R. Hall, James C. Holste, Philip T. Eubank,

Analytical Chemistry and Chromatography

The amount-of-substance density ϱn of gaseous ethane was measured in a Burnett-isochoric apparatus from 323 to 473 K in 25 K increments. Thirteen isochores ranging from 15.94 to 1489.0 mol m−3 nominal ϱn provide pressures from 43.0 to 5390kPa. For methyl chloride values of ϱn were observed at the same temperatures covering the vapor, gas, and near-critical regions. Seventeen isochores ranging from 20.42 to 8653.1 mol m−3 nominal ϱn provide pressures from 55.4 to 14908 kPa. Dense-vapor values near saturation are corrected for adsorption by a new technique. Second and third virial coefficients as well as derived thermophysical properties are reported for both ethane and methyl chloride. Optimal Lennard-Jones and Stockmayer force constants are calculated for ethane and methyl chloride respectively. Two sets of vapor pressures for methyl chloride are reported for the temperature range 313 to 408 K (T68c = 416.27 K).