Components:
(1) Ethylene,
C2H4; [74-85-1]
NIST WebBook
(2) 1,1,1,7-Tetrachloroheptane,
C7H12Cl4; [3922-36-9]
NIST WebBook
Original Measurements
Efremova, G. D.; Kovpakova, P. F.; Zh. Fiz. Khim. 1958, 32, 1231-1240.
Variables:
Ambient temperature: 273.35 - 373.15 K
Pressure: 1.013 - 10.13 MPa
Prepared by:
Method/Apparatus/Procedure:
The apparatus and procedure are described in Ref. 1. The equilibration device is a capillary tube 1 mm in diameter containing an internal mixer which is moved up and down by means of an external, motor driven magnet. The capillary tube is sealed in a vertical position and connected to a gas and liquid charging system, pressure gauges, as well as a volume regulator to maintain a constant pressure and to determine the volume of gas charged.
Graphs of liquid solution molar volumes are also given as a function of solution compositions, including those for critical values at high pressures.
Source and Purity of Materials:
- Ethene purity 97.5% by analysis.
- Tetrachloro-propane vacuum distilled. Actual purity not given. Density and refractive index at 20°C:
ρ = 1.2509 g cm-3,
nD = 1.4843
Estimated Errors:
Mass concentration (m/v) (1): δx1/x1 = ±4% (compiler)
References
1 Kritchevskii, I. R.; Efremova, G. D.; Zh. Fiz. Khim. 1956, 30, 1877.
Experimental Values:
Note: Phase equilibrium compositions of ethene in liquid solutions are graphically shown as a function of pressure over the complete ethene composition range to 99 mole percent ethene. Critical phenomena are reported for high concentrations of ethene at high pressures.| T (K) | T (°C) | x1 | P1 (kPa) | H (atm-1) |
|---|---|---|---|---|
| 273.35 | 2 x 10-1 | 1.43 x 10-2 | 101.3 | 70.0 |
| 298.15 | 25.0 | 1.08 x 10-2 | 101.3 | 93.0 |
| 323.15 | 50.0 | 8.5 x 10-3 | 101.3 | 117.0 |
| 348.15 | 75.0 | 7.2 x 10-3 | 101.3 | 139.0 |
| 373.15 | 100.0 | 6.1 x 10-3 | 101.3 | 164.0 |
(1) Henry's law constants and mole fraction solubility's at 101.3 kPa were evaluated by the compiler form enlarged graphs only; there were no numerical solubility data. Henry's law was Observed to fit the data closely up to about 0.40 mole fraction ethene for all temperatures.
