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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:
Wiebe, R.; Gaddy, V. L., J. Am. Chem. Soc. 1939, 61, 315-8
Variables:
Temperature = 323.15 K to 373.15 K
Pressure = 323.15 K to 373.15 K
Prepared By:
Rosa Crovetto
Experimental Remarks:
Authors' note: There is a change in solubility vs pressure in the low temperature range and at 100-200 atm that could suggest the coexistence of two liquid phases.
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]
Keunen coefficient, S
S Note
Mole Fraction (x
1
)
x
1
Note
50
323.15
a
25
25.33
9.71
b
0.7797
a
50
323.15
a
50
50.66
17.246
b
1.377
a
50
323.15
a
75
75.99
22.534
b
1.791
a
50
323.15
a
100
101.325
25.628
b
2.032
a
50
323.15
a
125
126.66
26.77
b
2.120
a
50
323.15
a
150
152.0
27.643
b
2.188
a
50
323.15
a
200
202.6
29.143
b
2.304
a
50
323.15
a
300
304.0
31.34
b
2.474
a
50
323.15
a
400
405.3
33.29
b
2.623
a
50
323.15
a
600
608.9
36.73
b
2.887
a
50
323.15
a
700
709.3
38.34
b
3.009
a
75
348.15
a
25
25.33
6.815
b
0.5485
a
75
348.15
a
50
50.66
12.59
b
1.009
a
75
348.15
a
75
75.99
17.044
b
1.361
a
75
348.15
a
100
101.325
2061
b
1.640
a
75
348.15
a
150
152.0
24.58
b
1.950
a
75
348.15
a
200
202.6
26.66
b
2.112
a
75
348.15
a
300
304.0
29.51
b
2.332
a
75
348.15
a
400
405.4
31.88
b
2.515
a
75
348.15
a
0700
709.3
37.59
b
2.952
a
100
373.15
a
25
25.33
5.365
b
0.4323
a
100
373.15
a
50
50.66
10.179
b
0.8170
a
100
373.15
a
75
75.99
14.289
b
1.143
a
100
373.15
a
100
101.325
17.67
b
0.410
a
100
373.15
a
150
152.0
22.725
b
1.806
a
100
373.15
a
200
202.6
25.694
b
2.037
a
100
373.15
a
300
304.0
29.53
b
2.334
a
100
373.15
a
400
405.3
32.39
b
2.554
a
100
373.15
a
700
709.3
38.50
b
3.022
a
Notes:
a
Calculated by the compiler.
b
Solubility of CO
2
(cm
3
at STP per gram of water).
Method/Apparatus/Procedure:
A high-pressure autoclave was used. Two flasks helped to maintain pressure constant during sampling. Pressure was read on a dead weight gauge. The liquid sample was analyzed for its CO
2
content by expansion into a thermostatted gas buret.
It was not stated if stirring was used.
Source and Purity of Materials:
(1) Purity 99.98 %.
(2) Not stated.
Estimated Errors:
Temperature: Not given.