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:
   Takenouchi, S.; Kennedy, G., Am. J. Sci. 1965, 263, 445-54.

Variables:
   Temperature = 423.15 K to 623.15 K
   Pressure = 100 bar to 1400 bar

Prepared By:
   Rosa Crovetto

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


t/°C	T/K	Pressure [bar]	Keunen coefficient, S	S Note	Mole Fraction (x₁)	x₁ Note
150	423.15	100	3.1	a	1.293	b
150	423.15	200	5.1	a	2.152	b
150	423.15	300	6.1	a	2.590	b
150	423.15	400	6.9	a	2.944	b
150	423.15	500	7.5	a	3.212	b
150	423.15	600	8.0	a	3.437	b
200	473.15	100	3.2	a	1.335	b
200	473.15	200	6.1	a	2.590	b
200	473.15	300	7.9	a	3.392	b
200	473.15	400	9.5	a	4.120	b
200	473.15	500	10.8	a	4.722	b
200	473.15	600	11.8	a	5.192	b
200	473.15	800	13.2	a	5.860	b
200	473.15	1000	14.2	a	6.345	b
200	473.15	1200	15.0	a	6.737	b
200	473.15	1400	15.6	a	7.034	b
250	523.15	100	2.8	a	1.165	b
250	523.15	200	6.0	a	2.546	b
250	523.15	300	9.6	a	4.166	b
250	523.15	400	12.1	a	5.334	b
250	523.15	500	14.3	a	6.394	b
250	523.15	600	16.4	a	7.433	b
250	523.15	800	20.4	a	9.495	b
250	523.15	1000	24.2	a	11.56	b
250	523.15	1200	27.2	a	13.26	b
250	523.15	1400	28.8	a	14.21	b
300	573.15	100	1.0	a	0.4118	b
300	573.15	200	6.4	a	2.723	b
300	573.15	300	12.2	a	5.382	b
300	573.15	400	18.2	a	8.347	b
300	573.15	500	26.2	a	12.80	b
350	623.15	200	3.6	a	1.506	b
350	623.15	300	14.3	a	6.394	b

Notes:
   ^a  Solubility of CO₂, expressed as mass % of CO₂ in water.
   ^b  Calculated by the compiler.

Method/Apparatus/Procedure:
   The experimental equipment and apparatus are the same as used in previous experimental work.¹
After equilibration, the liquid samples are analyzed for the amounts of CO₂. The composition of the co-existing gas phase was not determined.
The authors also present data for the solubility of CO₂ in aqueous solutions of NaCl.)

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

Estimated Errors:
   Solubility: δS = ± 2 % (by authors)
   Temperature: δT/K = ± 0.8 % (by authors)

References:
   1. Takenouchi, S.; Kennedy, G., Am. J. Sci. 1964, 262, 1055-74.