IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ethene with Human blood and Various aqueous solutions

Components:
   (1) Human blood; ; []  NIST Chemistry WebBook for detail
   (2) Various aqueous solutions; ; []  NIST Chemistry WebBook for detail
   (3) Ethene; C2H4; [74-85-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Orcutt, F.S., Waters, R.M., J. Biol. Chem. 1937, 117, 509-515.

Variables:
   Temperature = 298.15 K
   Pressure = 101.325

Prepared By:
   W. Hayduk

Experimental Remarks:

   I: Solution I contains 1 cm³ blood added to 2.5 cm³ aqueous acid ferricyanide reagent, total 3.5 cm³.

II: Solution II contains Solution I to which is added 1 cm³ 1 N caustic, total 4.5 cm³.

III: Solution III contains Solution II to which is added 1 cm³ alkaline hydrosulfite reagent, total 5.5 cm³.

The value of the Ostwald coefficient in dilute aqueous salt solutions containing blood exceeds that in water suggesting that the Ostwald coefficient in blood is geater than that in water, L = 0.108 cm³ gas/cm³ water. The Ostwald coefficient was estimated by the compiler for "pure" blood using reference 1 and was found to be L = 0.143 cm³ ethane/cm³ blood.

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


T/K	Ostwald coefficient L [cm³(gas) cm^–3 (solvent ]	Remark(s)
298.15	0.118	I Solution, defined below
298.15	0.110	II Solution, defined below
298.15	0.093	III Solution, defined below

Notes:

Method/Apparatus/Procedure:
   The Van Slyke-Neill manometric method which is based on the desorption of gases from blood in a partial vacuum was used. A small volume of solvent is saturated with gas by alternately bubbling the gas through the solvent and shaking the saturator at constant temperature and atmospheric pressure. A small, carefully measured volume of saturated solution is drawn into a 50 cm³ burette by lowering the mercury level in it. A partial vacuum is produced releasing most of the gas. The pressure, volume and temperature are measured. Corrections are made for the solvent vapor pressure (assumed to be as for water) and for the residual gas solubility in the solvent at the low pressure. Details in Ref. 1.

Source and Purity of Materials:
   1. Ethene. Source and purity not specified.
   2. Human, blood, not otherwise specified.
   3. Aqueous solutions as given above, not otherwise specified.

Estimated Errors:
   Solubility: δL/L = ± 0.10 (compiler)

References:
   1. Orcutt, F.S.; Seevers, M.H., J. Biol. Chem. 1937, 117, 501