IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Teepol and Water

Components:
   (1) Teepol; CH 53; [50642-03-0]  NIST Chemistry WebBook for detail
   (2) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
   (3) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Gjaldbæk, J. Chr. Acta Chem. Scand. 1953, 7, 537-44. Rosenthal, W., Thès. fac. sci. Univ. Strasbourg (France) 1954.

Variables:
   Temperature = 293.15 K
   Concentration = w₂/g kg^-1 = 0 - 1

Prepared By:
   H.L. Clever

Experimental Remarks:

   Note: Teepol CH 53 is sodium salt of dodecyl benzenesulfonic acid mixture with α-(nonylphenyl)-w-hydroxypoly(oxo-1,2-ethanediyl).
The small amount of the surface active agent does not affect the solubility of carbon dioxide in water although it decreases the water surface tension to about one-half the pure water value.

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


t/°C	T/K	Temp Note	Ostwald coefficient L [cm³/cm³]	Ostwald Note	Surface Tension [N/m]	SurfaceTension Note
20.0	293. 2	(a)	0.879 (d)	(c)	.073	a,b
20.0	293. 2	(a)	0.881 (e)	(c)	38	a,b

Notes:
   ^a  Calculated by the compiler.
   ^b  σ is surface tension.
In the original paper σ was given in units dyn cm^-1.
Relation to SI units: 1 dyn cm^-1 = 10^-3 N m^-1 = 10^-3 J m^-2.
   ^c  Ostwald coefficient
   ^d  Solvent pure water
   ^e  Solvent pure water + 1 % Teepol CH 53.

Method/Apparatus/Procedure:
   The prepared solvent and solution were charged into an evacuated cell after degassing, and the mass of solvent was determined by weight. Gas was introduced into the cell from a measuring buret in which the gas was stored over mercury. The cell was agitated while the gas pressure was maintained by adjusting the gas volume. The Ostwald coefficient was determined from the mass of solvent and the volume of gas absorbed. Solubilities were measured at pressures above and below atmospheric.

Source and Purity of Materials:
   (1) No information.
   (2) No information.
   (3) Made carbon dioxide free by boiling.

Estimated Errors:
   Solubility: δL/L = ± 0.02 (compiler)
   Temperature: δT/K = ± 0.2
   Pressure: δp/kPa = ± 0.1

References:
   Some data in the thesis have been published. See: 1. Maillard, A.; Rosenthal, W., Comp rend. 1952, 234, 2546-8.