IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ethene with Hexane

Components:
   (1) Ethene; C2H4; [74-85-1]  NIST Chemistry WebBook for detail
   (2) Hexane; C6H14; [110-54-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Waters, J.A.; Mortimer, G.A.; Clements, H.E., J. Chem. Eng. Data, 1970, 15, 174-176.

Variables:
   Temperature = 263 K to 293 K
   Pressure = 101.325 kPa

Prepared By:
   W. Hayduk

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)


t/°C	T/K	Temp Note	Pressure [mm mercury]	α [cm³ gas (NTP) / cm³ solvent]	α Note	Mole Fraction (x₁)	x₁ Note	Solubility	Solubility Note
−10	263.15	1	200.4	6.53	2	0.0347	1 Average	0.291	3 Mole/litre
−10	263.15	1	346.9	6.35	2	−	−	0.284	3 Mole/litre
−10	263.15	1	465.9	6.33	2	−	−	0.283	3 Mole/litre
0	273.15	1	507.0	5.42	2	0.0297	1 Average	0.242	3 Mole/litre
0	273.15	1	571.4	5.34	2	−	−	0.239	3 Mole/litre
10	283.15	1	543.3	4.77	2	0.0266	1 Average	0.213	3 Mole/litre
10	283.15	1	611.9	4.70	2	−	−	0.210	3 Mole/litre
20	293.15	1	570.2	4.35	2	0.0244	1 Average	0.149	3 Mole/litre
20	293.15	1	643.7	4.27	2	−	−	0.190	3 Mole/litre

Notes:
   ¹  Calculated by compiler
   ²  Although not specified in paper, compiler confirms that α as given is the Bunsen coefficient.
   ³  Solubility, s and x₁, are calculated for a gas partial pressure of 101.325 kPa.

Method/Apparatus/Procedure:
   The method involved measuring the pressure change in a gas reservoir of known volume. Two glass bulbs were connected by tubing fitted with a pressure transducer, gas supply and vacuum lines. The solvent (100 cm³) was degassed in one of the bulbs equipped with a stirrer using liquid nitrogen. Gas was charged to a higher pressure in the second bulb and quantitatively charged into the first bulb at the appropriate temperature. The final pressure in the equilibrium flask was measured.

Source and Purity of Materials:
   1. Ethene, Monsanto polymerization grade, purity 99.85 %.
   2. Hexane was from Phillips Petroleum, purity 99.0 %.

Estimated Errors:
   Solubility: δs/s = ± 2%
   Temperature: δT/K = ± 0.01