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:
   Shagiakhmetov, R.A.; Tarzimanov, A.A., Deposited Doc. 1981, SPSTL 200 khp - D 81, 1982.

Variables:
   Temperature = 323.15 K to 423.15 K
   Pressure = 10 MPa to 80 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 [MPa]	Pressure (compiler) [bar]	Keunen coefficient, S	S Note	Mole Fraction (x₁)	x₁ Note
50	323.15	a	10	100	25.2	b	1.999	a
50	323.15	a	20	200	29.0	b	2.293	a
50	323.15	a	40	400	33.7	b	2.655	a
50	323.15	a	60	600	36.3	b	2.854	a
100	373.15	a	10	100	18.1	b	1.444	a
100	373.15	a	20	200	25.6	b	2.030	a
100	373.15	a	40	400	31.8	b	2.509	a
100	373.15	a	60	600	37.0	b	2.907	a
100	373.15	a	80	800	45.1	b	3.521	a
150	423.15	a	10	100	14.5	b	1.160	a
150	423.15	a	20	200	26.4	b	2.092	a
150	423.15	a	40	400	38.7	b	3.037	a
150	423.15	a	60	600	55.4	b	4.291	a
150	423.15	a	80	800	76.4	b	5.823	a

Notes:
   ^a  Calculated by the compiler.
   ^b  Solubility of CO₂ (cm³ of gas at STP per gram of water.

Method/Apparatus/Procedure:
   A static method with sampling and analysis of the liquid phase was used. To attain equilibrium, the cell was gently rocked over 160 degrees.
(The authors also did measurements at 298.15 K, but as the experimental pressures are greater than the CO₂ vapor pressure at that temperature, the data at 298.15 K are not given here.)

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

Estimated Errors:
   Solubility: δS = ± (3-5) % (by authors)