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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Calcium chloride, Methanol and Water
Components:
(1) Calcium chloride; CaCl2; [10043-52-4]
NIST Chemistry WebBook
for detail
(2) Methanol; CH4O; [67-56-1]
NIST Chemistry WebBook
for detail
(3) Carbon dioxide; CO2; [124-38-9]
NIST Chemistry WebBook
for detail
(4) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Sada, E.; Kito, S.; Ito, Y., Adv. Chem. Ser. 1976, No. 155 (Thermodynamic Behavior of Electrolytes in Mixed Solvents Symp., 1975. Furter, W.F., Editor) 374-80.
Variables:
Temperature = 298.15 K
Pressure = 298.15 K
Concentration =
c
2
/mol dm
-3
= 0 - 0.9623
x
3
= 0.280 - 1.0
Prepared By:
H.L. Clever
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
T/K
Density ρ [g/cm
3
]
Concentration C
2
[mol/dm
3
]
α
α Note
Mole Fraction (x
3
)
Ionic Strength [mol/dm
3
]
298.15
-
0
0.9695
a
0.280
0
298.15
0.9472
0.2024
0.8885
a
0.280
0.6072
298.15
0.9565
0.3051
0.8486
a
0.280
0.9151
298.15
0.9721
0.4837
0.7867
a
0.280
1.4510
298.15
0.9912
0.6990
0.7228
a
0.280
2.0969
298.15
-
0
1.775
a
0.389
0
298.15
0.9260
0.2130
1.0707
a
0.389
0.6389
298.15
0.9308
0.2659
1.0546
a
0.389
0.7978
298.15
0.9358
0.3208
1.0249
a
0.389
0.9624
298.15
0.9610
0.5983
0.9180
a
0.389
1.7948
298.15
0.9743
0.7502
0.8694
a
0.389
2.2506
298.15
-
0
1.8161
a
0.587
0
298.15
0.8857
0.2340
1.6361
a
0.587
0.7021
298.15
0.8931
0.3151
1.5963
a
0.587
0.9554
298.15
0.9330
0.7292
1.3187
a
0.587
2.1877
298.15
-
0
2.7813
a
0.800
2
298.15
0.8562
0.3257
2.3869
a
0.800
0.9771
298.15
0.8827
0.5850
2.1193
a
0.800
1.7551
298.15
0.9112
0.8667
1.8634
a
0.800
2.6001
298.15
-
0
3.9003
a
1.0
0
298.15
-
0.2935
3.3315
a
1.0
0.8805
298.15
0.8637
0.6643
2.7794
a
1.0
1.9928
298.15
0.8952
0.9623
2.4118
a
1.0
2.8868
Notes:
a
Bunsen coefficient [cm
3
(STP) cm
-3
atm
-1
].
Method/Apparatus/Procedure:
Full description of the apparatus and the mode of operation are given elsewhere (Ref. 1). The principle of the method is that a known volume of gas in liquid-saturated vapor state is brought into contact with a measured amount of gas-free liquid. Equilibrium is established by agitation, and the volume of gas remaining is measured. After correction for the solvent vapor pressure, the change in the gas volume gives the solubility. The vapor pressure of the salt solutions at 20 °C were calculated by use of Raoult's law.
The gas free solution was prepared by mixing methanol, water and calcium chloride, each of which was separately degassed or desorbed.
The compiler calculated the calcium chloride molar concentrations from the ionic strength given in the paper. The methanol mole fraction refers to the salt free liquid. The salt effect in water is in Ref. 1.
Source and Purity of Materials:
(1) Source not given, commercial cylinder. Purity of > 99.8 % confirmed by gas chromatography.
(2, 3) From Nakarai Chemicals Ltd. (Tokyo). Used without further purification.
(4) Distilled.
Estimated Errors:
Solubility: δα/α = ± 0.01 (compiler)
Mole fraction of salt free solvent reproducible to 0.001.
References:
1. Onda, K.; Sada, E.; Kobayashi, T.; Kito, S.; Ito, K., J. Chem. Eng. Jpn. 1970, 3, 18.