SDS Volume (1170)

Volume 57. Ethene, p None

Original Measurements

Sanchez, M.; Lentz, H.; High Temp. High Press. 1973, 5, 689-699.

Variables:

Room Temp: 439.15 - 573.15 $\pu{K}$
Pressure: 10.0 - 94.5 $\pu{MPa}$

Prepared by:

W. Hayduk

Method/Apparatus/Procedure:

The apparatus consisted of a high pressure piston pump, Bourdon pressure gauges, a stainless steel capillary tube equilibrium cell 4.7 mm in inside diameter, a tubular storage chamber for the gas, as well as an associated temperature sensing element, sampling probes and valves. The apparatus was mounted in a constant temperature chamber. The equilibrium cell was charged with a known quantity of solvent by rotating it to a horizontal position. The quantity of gas was determined by material balance and the PV relation in the gas supply tube.

Source and Purity of Materials:
  1. Ethene purity was specified to be 99.99%.
  2. Water was double distilled.
Estimated Errors:

Ambient temperature: δT/K = ±0.5
Mass concentration (m/v) (1): δx1/x1 = ±0.05 or ±5% (Compiler)

Components:
  1. Ethene, $\ce{ C2H4 }$; [74-85-1] NIST WebBook
  2. Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data

Smoothed values as obtained by extrapolation and interpolation are also available in this paper.

$T$ ($\pu{K}$) $T$ (°C) $y_{1}$ $x_{1}$ $P$ ($\pu{bar}$) $P_{\rm{c}}$ ($\pu{MPa}$)
439.15166 0.8604 x 10-31E+2 8.60
439.15166 0.8905 x 10-31.5E+2 13.35
439.15166 0.9590.010635 60.90
439.15166 0.9108 x 10-3945 86.00
523.15250 0.6300.0141.9E+2 11.97
523.15250 0.6880.0182.4E+2 16.51
523.15250 0.7660.026375 28.73
523.15250 0.7500.0345.7E+2 42.75
523.15250 0.8100.0407.3E+2 59.13
573.15300 0.5160.0242.4E+2 12.38
573.15300 0.5970.0363.8E+2 22.69
573.15300 0.5500.0475.5E+2 30.25

(a) Calculated by the compiler.

(b) Bracketed () in original paper.

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