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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Sodium chloride and Water
Components:
(1) Sodium chloride; NaCl; [7647-14-5]
NIST Chemistry WebBook
for detail
(2) Carbon dioxide; CO2; [124-38-9]
NIST Chemistry WebBook
for detail
(3) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Malinin, S. D.; Savelyeva, N. I., *Geokhimiya 1972, (6), 643-53; Geochem. Int. 1972, 9, 410-8.
Variables:
Temperature = 298.15 K to 358.15 K
Pressure = 47.95 bar
Concentration =
c
2
/mol L
-1
= 0 - 4.458
Prepared By:
C.L. Young
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
T/K
Pressure [bar]
Concentration C
1
Concentration Note
Concentration C
2
[mol/L]
Keunen coefficient, S
S Note
298.15
47.95
52.67
a
0.00
52.84
b
298.15
47.95
52.95
a
0.00
52.84
b
298.15
47.95
52.84
a
0.00
52.84
b
298.15
47.95
40.81
a
0.905
43.25
b
298.15
47.95
41.61
a
0.905
43.25
b
298.15
47.95
40.98
a
0.905
43.25
b
298.15
47.95
40.99
a
0.905
43.25
b
298.15
47.95
41.27+
a
0.905
43.25
b
298.15
47.95
32.71+
a
1.793
36.14
b
298.15
47.95
26.19
a
2.597
30.43
b
298.15
47.95
26.23
a
2.597
30.43
b
323.15
47.95
32.86
a
0.00
32.86
b
323.15
47.95
32.865+
a
0.00
32.86
b
323.15
47.95
32.90
a
0.00
32.86
b
323.15
47.95
32.73
a
0.00
32.86
b
323.15
47.95
29.84
a
0.358
30.38
b
323.15
47.95
29.77
a
0.358
30.38
b
323.15
47.95
25.10
a
1.012
26.72
b
323.15
47.95
25.25
a
1.012
26.72
b
323.15
47.95
20.80
a
1.794
23.14
b
323.15
47.95
20.94
a
1.794
23.14
b
323.15
47.95
17.17
a
2.741
19.95
b
358.15
47.95
23.93
a
0.00
23.92
b
358.15
47.95
24.01
a
0.00
23.92
b
358.15
47.95
23.79+
a
0.00
23.92
b
358.15
47.95
23.99+
a
0.00
23.92
b
358.15
47.95
21.38+
a
0.4162
21.92
b
358.15
47.95
21.42+
a
0.4162
21.92
b
358.15
47.95
17.81+
a
1.133
19.06
b
358.15
47.95
17.88+
a
1.133
19.06
b
358.15
47.95
14.07+
a
2.200
16.03
b
358.15
47.95
14.19+
a
2.200
16.03
b
358.15
47.95
11.68+
a
3.216
13.89
b
358.15
47.95
9.29+
a
4.429
11.64
b
358.15
47.95
9.20+
a
4.429
11.64
b
358.15
47.95
9.18+
a
4.458
11.60
b
358.15
47.95
9.24+
a
4.458
11.60
b
Notes:
+
Equilibrium state approached from supersaturation
a
Solubility of CO
2
:
C
1
=
m
1
(in grams) / 1 kg of solution
b
Solubility of CO
2
:
S
1
=
m
1
(in grams) / 1 kg of water
Method/Apparatus/Procedure:
Flow system with about 0.25 L of solution in 0.5 L stainless steel cell. After equilibrium established, liquid sampled and carbon dioxide absorbed in potassium hydroxide. Gain in weight of absorption train used to estimate amount of carbon dioxide. Details in source.
Source and Purity of Materials:
(1) GOST 8050-64 sample.
(2) Analytical reagent grade sample.
(3) No details given.
Estimated Errors:
Solubility: δ
C
1
, δ
S
1
= ± 0.5 % (estimated by compiler)
Temperature: δ
T
/K = ± 0.1 (estimated by compiler)
Pressure: δ
P
/bar = ± 0.1 (estimated by compiler)