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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:
Variables:
Prepared By:
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Temp Note
Pressure [mmHg]
Pressure (compiler) [bar]
α
α Note
Mole Fraction (x
1
)
x
1
Note
0.2
273.15
a
760
1.019
1.7023
b
13.76
a
25
298.15
a
760
1.045
0.7565
b
6.118
a
40
313.15
a
760
1.087
0.5133
b
4.152
a
Method/Apparatus/Procedure:
The apparatus was a thermostatted all-glass absorption flask provided with stirring. The solubility was calculated from the change in volume of the gas before and after equilibration at constant pressure. The partial pressure was maintained at 760 mmHg once all the corrections including solvent vapor pressure were done.
Source and Purity of Materials:
(1) From commercial cylinder. 99.8%.
(2) Freshly distilled and degassed.
Estimated Errors:
Temperature: At 0.2 °C
δt/°C = ± 0.1 % δα = ± 0.2 %
At 25 and 40 °C
δt/°C = ± 0.03 % δα = ± 0.06 %