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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Sodium iodide and Water
Components:
(1) Sodium iodide; NaI; [7681-82-5]
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:
Gerecke, J., Diss. Dr. rer. Nat. 1969, Hochsch. "Carl Schorlemmer", Leuna-Merseburg, DDR.
Variables:
Temperature = 288.15 K to 333.15 K
Pressure = 288.15 K to 333.15 K
Concentration =
c
2
/mol dm
-3
= 0 - 4
Prepared By:
D.M. Mason
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Concentration C
2
[mol/dm
3
]
Keunen coefficient, S
S Note
α
α Note
15
288.15
0
-
b
0.990
a
15
288.15
0.5
0.875
b
0.858
a
15
288.15
1
0.844
b
0.814
a
15
288.15
2
0.713
b
0.661
a
15
288.15
4
0.553
b
0.470
a
20
293.15
0
-
b
0.860
a
20
293.15
0.5
0.781
b
0.766
a
20
293.15
1
0.756
b
0.727
a
20
293.15
2
0.634
b
0.587
a
20
293.15
4
0.493
b
0.418
a
25
298.15
0
0.5173
b
0.758
a
25
298.15
0.5
0.709
b
0.694
a
25
298.15
1
0.668
b
0.642
a
25
298.15
2
0.566
b
0.522
a
25
298.15
4
0.4425
b
0.374
a
30
303.15
0
-
b
0.671
a
30
303.15
0.5
0.641
b
0.627
a
30
303.15
1
0.590
b
0.565
a
30
303.15
2
0.497
b
0.458
a
30
303.15
4
0.387
b
0.326
a
35
308.15
0
-
b
0.605
a
35
308.15
0.5
0.584
b
0.570
a
35
308.15
1
0.521
b
0.498
a
35
308.15
2
0.445
b
0.409
a
35
308.15
4
0.366
b
0.308
a
40
313.15
0
-
b
0.546
a
40
313.15
0.5
0.5265
b
0.513
a
40
313.15
1
0.4655
b
0.445
a
40
313.15
2
0.402
b
0.369
a
40
313.15
4
0.3612
b
0.303
a
45
318.15
0
-
b
0.482
a
45
318.15
0.5
0.478
b
0.465
a
45
318.15
1
0.428
b
0.408
a
45
318.15
2
0.357
b
0.327
a
45
318.15
4
0.3495
b
0.292
a
50
323.15
0
-
b
0.436
a
50
323.15
0.5
0.443
b
0.430
a
50
323.15
1
0.386
b
0.367
a
50
323.15
2
0.322
b
0.294
a
50
323.15
4
0.3455
b
0.288
a
55
328.15
0
-
b
0392
a
55
328.15
0.5
0.407
b
0.395
a
55
328.15
1
0.3516
b
0.334
a
55
328.15
2
0.295
b
0.269
a
55
328.15
4
0.340
b
0.284
a
60
333.15
0
-
b
0.372
a
60
333.15
0.5
0.378
b
0.366
a
60
333.15
1
0.324
b
0.307
a
60
333.15
2
0.268
b
0.244
a
60
333.15
4
0.350
b
0.290
a
Notes:
a
α = Bunsen coefficient [cm
3
(STP) cm
-3
atm
-1
].
b
S
= Kuenen coefficient [cm
3
(STP) g
-1
(H
2
O) atm
-1
].
Method/Apparatus/Procedure:
The principle of the Ostwald method was used in which a measured volume of gas-free liquid is stirred in the presence of the gas, and its decrease in volume is measured in a burette over mercury. The volume of liquid was measured at the experimental temperature. For calculation of the Kuenen coefficient, the density of the solution was obtained from Landolt-Börnstein extant 1969. The molar concentration of salt in the liquid was standardized at 20°C. These data are analyzed and discussed further in Ref. 1.
Source and Purity of Materials:
(1)VEB Leuna Works; 99.8 vol %; the impurity was mostly water (author).
(2) DDR pro analysis grade by DDR Standard TGL 5021.
(3) Double distilled.
Estimated Errors:
Temperature: Not given.
References:
1. Gerecke, J.; Bittrich, H.J., Wiss. Z. Tech. Hochsch. Chem. "Carl Schorlemmer" Leuna-Merseburg 1971, 13(2), 115-22.