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:
   Ellis, A.J.; Golding, R.M., Am. J. Sci. 1963, 261, 47-60.

Variables:
   Temperature = 450.15 K to 607.15 K
   Pressure = 1.59 Mpa to 7.65 Mpa

Prepared By:
   Rosa Crovetto

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


t/°C	T/K	Temp Note	Pressure [atm]	Pressure (compiler) [bar]	10³ * Keunen coefficient, S	S Note	Mole Fraction (x₁)	x₁ Note
177	450.15	a	15.7	25.254	2.24	b	0.2235	a
202	475.15	a	17.7	34.132	2.84	b	0.2832	a
204	477.15	a	36.1	53.458	5.85	b	0.5816	a
229	502.15	a	46.3	74.355	7.73	b	0.7671	a
229	502.15	a	43.5	71.518	7.60	b	0.7543	a
235	208.15	a	29.7	60.697	4.75	b	0.4728	a
261	534.15	a	53.1	101.463	10.9	b	1.078	a
261	534.15	a	49.6	97.917	10.2	b	1.010	a
265	538.15	a	23.1	74.227	4.74	b	0.4718	a
265	538.15	a	20.4	71.492	4.28	b	0.4262	a
309	582.15	a	75.5	173.76	21.6	b	2.114	a
309	582.15	a	72.1	170.31	19.6	b	1.922	a
309	582.15	a	68.1	166.26	18.6	b	1.826	a
334	607.15	a	62.9	198.70	21.7	b	2.124	a
334	607.15	a	59.2	195.26	20.3	b	1.990	a

Notes:
   ^a  Calculated by the compiler.
   ^b  S = n₁/mol divided by n₂/mol. (Mole ratio or CO₂ and water.)

Method/Apparatus/Procedure:
   A static all-metal high-pressure autoclave was used. There was no stirring. Long equilibration times were used. The amounts of water and carbon dioxide in the liquid sample were determined by weighing. The H₂O was absorbed by anhydrone and the CO₂ in Carbosorb.

Source and Purity of Materials:
   (1) Not stated.
   (2) Degassed.

Estimated Errors:

   Temperature: Not given.