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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:
Vázquez, G.; Chenlo, F.; Pereira, G., Afinidad 1994, 51, (No. 453) 369-74.
Variables:
Temperature = 298.1 K
Pressure = 1.013 bar
Concentration = γ
2
/g L
-1
= 0 ‐ 160
Prepared By:
Pirketta Scharlin; Rosa Crovetto
Experimental Remarks:
The authors also report values for viscosity μ:
γ2
/g L
-1
0 40 80 120 160
μ/mPa s 0.890 0.948 1.016 1.092 1.175
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
T/K
Density ρ [kg/m
3
]
Density Note
Ostwald coefficient L
Ostwald Note
Concentration C
1
[mol/dm
3
]
Concentration Note
Concentration C
2
[mol/L]
Concentration Note
γ [g/L]
γ Note
298.1
997.0
c
0.814
e
0.0333
d
0
b
0
a
298.1
1028.7
c
0.702
e
0.0287
d
0.684
b
40
a
298.1
1054.9
c
0.597
e
0.0244
d
1.369
b
80
a
298.1
1079.4
c
0.509
e
0.0208
d
2.053
b
120
a
298.1
1102.7
c
0.435
e
0.0178
d
2.738
b
160
a
Notes:
a
γ
2
= mass concentration NaCl
b
c
3
= concentration of NaCl; calculated by the compiler.
c
ρ = density of aqueous NaCl solution
d
c
1
= solubility of CO
2
e
L
= Ostwald coefficient [cm
3
cm
-3
]; calculated by the compiler (PS) (ideal gas behavior assumed)
Method/Apparatus/Procedure:
The apparatus is a combination of previous designs (Refs 1 and 2). It was modified to achieve a more accurate determination of the volume of the absorbent liquid. The apparatus measures the volume of absorbed gas as the volume of mercury that must be supplied to the system in order to restore the initial pressure.
The raw solbility data obtained are gas/ liquid volume ratios. A detailed description of apparatus, method and procedure is given in Ref. 3.
Source and Purity of Materials:
(1) Commercial, purity 99.5 mole %.
(2) No details given.
(3) Distilled and degassed.
Estimated Errors:
Solubility: δ
c
1
/c
1
< ± 1 % [estimated by compiler (PS) on the basis of the information in Ref. 3]
Temperature: δ
T
/K = ± 0.1
Pressure: δP/bar = ± 0.001
References:
1. Alvarez, J.R.; Fernandez, A.; Coll, A., Ing. Quim. 1984, 16, 67.
2. Haimour, N., J. Chem. Eng. Data 1990, 35, 177.
3. Vázquez, G.; Chenlo, F.; Pereira, G.; Peaguda, J., J. Chem. Eng. Data 1994, 39, 639.