SDS Volume (1289)
Volume 57. Ethene, p 341
Original Measurements
Hannaert, H.; Haccuria, M.; Mathieu, M. P.; Ind. Chim. Belge 1967, 32, 156-164.
Variables:
Room Temp: 273.15 - 353.15 $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
The authors describe three methods:
1.A. [Saturat. n°1]. A measure of the static pressure of saturation in an apparatus which gave a precision of 10 - 15 %.
1.B. [Saturat. n°2]. A measure of the static pressure of saturation in an apparatus which gave a precision of 2 - 5 %.
2. [Chromato]. A gas liquid chromatographic method estimated to have a precision of 2 - 5 %.
3. [Anal. directe]. Direct analysis of the gaseous and liquid phases.
Method 2 was used for these systems.
Source and Purity of Materials:
- Ethene. Air Liquide. For narcosis, 99.9%.
- Carbowax. Union Carbide.
Polyethylene glycols.
Carbowax 400 $M_{\rm{w}} = \pu{400 \pm 20 g mol-1}$.
Carbowax 350 $M_{\rm{w}} = \pu{350 \pm 15 g mol-1}$.
Components:
- Ethene $\ce{ C2H4 }$ [74-85-1]; NIST WebBook
-
Carbowax 400 $\ce{ $\ce{C2_{n}H_{4n+2}O_{n+1}}$ (n = 8.2 to 9.1) }$
[25322-68-3];
NIST WebBook
Carbowax 350 $\ce{ $\ce{CH3O(CH2CH2O)_{n}H}$ }$ [9004-74-4]; NIST WebBook
Experimental Data
| Carbowaxes; carbowax 400, carbowax 350 | $T$ ($\pu{K}$) | $x_{1}$ | $k_{\rm{D}}$ ($\pu{atm-1}$) | $\Delta H$ ($\pu{kcal/mol}$) |
|---|---|---|---|---|
Carbowax 400
(
 )
|
273.15-353.15 | - | 83 | 1.69 |
|
Carbowax 350
(
)
|
293.15-313.15 | - | 81.5 | 2.66 |
(1) $\log (K \pi\nu/\pu{at}m) = A - (\delta H/\pu{cal mol-1})/(2.3\rm{R}(T/\pu{K}))$
(2) The function, $K\pi\nu$/$\pu{atm}$, is equivalent to a Henry's constant in the form $H_{1,2}/\pu{atm} = (f_{1}/\pu{atm})/x_{1}$ where $f_{1}$ is the fugacity.
(3) The authors definitions are: $K = y_{1}/x_{1} = \frac{\text{mole fraction gas in gas phase}}{\text{mole fraction gas in liquid phase}}$; $\pi/\pu{atm}$ = total pressure; $\nu$ = coefficient of fugacity.