IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Ethene with 1, 2-Ethanediol (ethylene glycol)

   (1) 1, 2-Ethanediol (ethylene glycol); C2H5O2; [107-21-1]  NIST Chemistry WebBook for detail
   (2) Ethene; C2H4; [74-85-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Hannaert, H.; Haccuria, M.; Mathieu, M.P., Ind. Chim. Belge 1967, 32, 156-164.

   Temperature = 303.15 K
   Pressure = 303.15 K

Prepared By:
   W. Hayduk

Experimental Remarks:

   The authors definitions are for Kπν are :

K = y1/x1 = mole fraction gas in gas phase ÷ mole fraction gas in liquid phase

π / atm = total pressure

ν = coefficient of fugacity

The function Kπν /atm, is equivalent to a Henry's constant in the form H1,2/atm = (ƒ1/atm)/x1 where ƒ1 is the fugacity.

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°CT/KHenry's law constant, K [πν]Mole Fraction (x1)x1 Note
   1  Mole fraction solubility calculated by compiler for a gas partial pressure of 101.3 kPa with v = 1.

   The authors describe several methods used; the one used in this case is the gas chromatographic method.
The stationary phase of the column was impregnated with a known mass of solvent. Nitrogen was used for determining the free volume of gas in the column. Various corrections were employed for dead volumes in the tubing and detector as well as for inlet and outlet pressures. Unfortunately the method could only be used with solvents of very low volatility.

Source and Purity of Materials:
   1. Ethene. Air Liquide. Specified purity 99.9%.
   2. 1,2-Ethanediol. No information.

Estimated Errors:
   Solubility: δx1/x1 = ± 2 to 5% (authors)