IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Water

Components:
   (1) Carbon dioxide; CO2; [124-38-9]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Versteeg, G.F.; van Swaaij, W.P.M., J. Chem. Eng. Data 1988, 33, 29-34.

Variables:
   Temperature = 291 K to 360.1 K
   Pressure = less than or equal to 10² kPa

Prepared By:
   Pirketta Scharlin

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


T/K	10⁴ * Henry's law constant, K [mol/m³ Pa¹]	Henry Constant Note
291	4.05	a
292	4.15	a
292	3.89	a
293	3.80	a
297	3.37	a
297	3.29	a
303	2.80	a
308	2.54	a
311.4	2.44	a
313	2.37	a
313.4	2.38	a
318	2.06	a
323	1.94	a
333	1.63	a
343.5	1.40	a
350.2	1.32	a
355.2	1.20	a
360.1	1.08	a

Notes:
   ^a  K_H = Henry's law constant

Method/Apparatus/Procedure:
   The solubility was measured in a glass vessel which was filled with a calibrated volume of solvent. The solvent was degassed, and the vapor-liquid equilibrium was established. Equilibrium pressure was recorded by a pressure transducer. The gas was fed to the vessel until an arbitrary pressure (P is less than or equal to 10⁵ Pa) was reached. The pressure was recorded again. The vessel was closed, and the magnetic stirrer was started to agitate the liquid. After the equilibrium pressure was reached the solubility was calculated, based on Henry's law.
In the paper the authors report solubility and diffusivity of CO₂ and N₂O in water and aqueous alkanolamine solutions.

Source and Purity of Materials:
   (1) Nothing specified.
   (2) Distilled. Degassed.

Estimated Errors:

   Temperature: The reproducibility between the various experiments was within 3 %.