IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ethene with Trichloromethane (chloroform)

Components:
   (1) Trichloromethane (chloroform); CHCl3; [67-66-3]  NIST Chemistry WebBook for detail
   (2) Ethene; C2H4; [74-85-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Camacho Rubio, F.; Delgado Diaz, S.; Alvaro Alvarez, R., Revista Ing. Quim. (Spain) 1980, 12, 83-87.

Variables:
   Temperature = 293.15 K to 308.15 K
   Pressure = 101.325 kPa

Prepared By:
   W. Hayduk

Experimental Remarks:

   The ethene solubility in chloroform is shown as a straight-line graph only, with log K_s versus 1/T for an applicable temperature range from 293.15 to 308.15 K.

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


t/°C	T/K	Henry's law constant, K [atm (mole fraction)^–1]	Henry Constant Note	Mole Fraction (x₁)	x₁ Note	Remark(s)
20	293.15	66.62	2	0.0150	2	(1) 3.602 log<10> K~~, K~~/mm Hg (mol/1)−1~~~~
25	298.15	74.07	2	0.0135	2	(1) 3.651 log<10> K~~, K~~/mm Hg (mol/1)−1~~~~
30	303.15	82.10	2	0.0122	2	(1) 3.699 log<10> K~~, K~~/mm Hg (mol/1)−1~~~~
35	308.15	90.66	2	0.0110	2	(1) 3.746 log<10> K~~, K~~/mm Hg (mol/1)−1~~~~

Notes:
¹ Values of log K_s were taken from an enlarged graph and fitted to an equation by the compiler as follows:

log₁₀K_s = 6.5583 - 866.67 (T/K)^-1

K_s = a form of Henry's constant, mmHg pressure (mo1/1)^-1

   ²  A more common Henry's constant (H) and mole fraction ethene solubility for a partial pressure of 101.3 kPa were calculated by the compiler.

Method/Apparatus/Procedure:
   A glass vessel, 100 cm in volume, equipped with three ports and submerged in a constant temperature bath, is used for solubility determinations. One port is connected to a gas burette from which a known volume of gas can be charged using a mercury levelling bottle. Another port is for evacuation and the third is for temperature measurement. A magnetic stirrer is employed. A drying tube is used to ensure that the ethene is dry. Care is also taken to ensure that the purified solvent is not exposed to air.

Source and Purity of Materials:
   1. Ethene. Neither source nor purity specified.
   2. Trichloromethane. The 1.5 parts ethanol stabilizer per 100 parts solvent (v/v) were removed by adsorption on activated silica. Purity not specified.

Estimated Errors:
   Solubility: δ x₁/x₁ = ± 4% (Compiler)