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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:
Postigo, M.A.; Katz, M., J. Solution Chem. 1987, 16, 1015-24.
Variables:
Temperature = 288.15 K to 308.15 K
Pressure = 101.3 kPa
Prepared By:
R.W. Cargill
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Ostwald coefficient L
Ostwald Note
Henry's law constant, K [MPa]
Henry Constant Note
Mole Fraction (x
1
)
x
1
Note
15
288.15
1.075
a, c
123.7
b
0.819
a
20
293.15
0.943
a, c
143.3
b
0.707
a
25
298.15
0.829
a, c
165.5
b
0.612
a
30
303.15
0.738
a, c
188.8
b
0.537
a
35
308.15
0.668
a, c
211.7
b
0.479
a
Notes:
a
Calculated by the compiler.
b
K
H
= Henry's law constant.
c
L
= Ostwald coefficient [cm
3
cm
-3
].
Method/Apparatus/Procedure:
Known volumes of gas and solvent were introduced into 250 cm
3
flask, then initial and final pressures were measured by a transducer connected to a digital multimeter. The flask was submerged in a thermostatic bath. Full details given in Ref. 1.
Source and Purity of Materials:
(1) Carbon dioxide: no information
(2) Water: degassed by boiling; composition checked by refractive index measurement at 298 K.
Estimated Errors:
Solubility: δL/L = 1 %
Temperature: δ
T
/K = ± 0.02
Pressure: δ
P
1
/Pa = ± 10
References:
1. Postigo, M.A.; Pedrosa, G.C.; Katz, M., Anal. Asoc. Quim. Argentina, 1978, 66, 25.