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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Lithium formate with Cadmium formate and Water
Components:
(1) Cadmium formate; Cd(CHO2)2; [4464-23-7]
NIST Chemistry WebBook
for detail
(2) Lithium formate; LiCHO2; [556-63-8]
NIST Chemistry WebBook
for detail
(3) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Itkina, L.S.; Nadzharyan, K.A.; Lepeshkov, I.N., Zh. Neorg. Khim. 24, 2244 (1979).
Variables:
Concentration = Composition at 50 ºC
Prepared By:
Chr. Balarew and St. Trendafilova
Experimental Remarks:
The molality values were calculated by the compilers.
Experimental Data:
(Notes on the Nomenclature)
(Please see footnotes following the table(s).)
Solubility values in the LiCHO
2
-Cd(CHO
2
)
2
-H
2
O system at 50 °C.
Chemical
1
Phase
Mass Fraction w
1
m
1
[mol kg-1]
Chemical
2
Mass Fraction w
2
m
2
[mol kg-1]
Solid Phase(s)
a
LiCHO2
Liquid
---
---
Cd(CHO2)2
27.77
1.899
A
LiCHO2
Liquid
6.37
1.70
Cd(CHO2)2
21.52
1.474
A
LiCHO2
Liquid
12.00
3.632
Cd(CHO2)2
24.41
1.896
A
LiCHO2
Liquid
14.07
4.373
Cd(CHO2)2
28.76
2.485
A
LiCHO2
Liquid
14.86
4.803
Cd(CHO2)2
25.59
2.123
A+B
LiCHO2
Liquid
16.42
5.979
Cd(CHO2)2
30.72
2.871
B
LiCHO2
Liquid
17.31
6.397
Cd(CHO2)2
30.61
2.903
B
LiCHO2
Liquid
17.75
6.594
Cd(CHO2)2
30.44
2.902
B
LiCHO2
Liquid
17.99
6.840
Cd(CHO2)2
31.39
3.063
B
LiCHO2
Liquid
18.41
7.065
Cd(CHO2)2
31.44
3.097
B
LiCHO2
Liquid
18.79
7.250
Cd(CHO2)2
31.33
3.103
B+C
LiCHO2
Liquid
19.09
7.363
Cd(CHO2)2
31.01
3.069
C
LiCHO2
Liquid
19.79
7.632
Cd(CHO2)2
30.30
2.999
C
LiCHO2
Liquid
21.14
8.019
Cd(CHO2)2
28.12
2.737
C
LiCHO2
Liquid
25.06
9.245
Cd(CHO2)2
22.77
2.156
C
LiCHO2
Liquid
25.76
9.335
Cd(CHO2)2
21.13
1.965
C
LiCHO2
Liquid
29.88
11.22
Cd(CHO2)2
18.86
1.818
C
LiCHO2
Liquid
30.11
11.33
Cd(CHO2)2
18.75
1.811
C+D
LiCHO2
Liquid
30.09
10.53
Cd(CHO2)2
14.92
1.340
D
LiCHO2
Liquid
30.80
9.629
Cd(CHO2)2
7.64
0.613
D
LiCHO2
Liquid
36.04
10.845
Cd(CHO2)2
---
---
D
Notes:
a
The solid phases are: A = Cd(CHO
2
)
2
•2H
2
O; B = Cd(CHO
2
)
2
; C = LiCHO
2
•Cd(CHO
2
)
2
; D = LiCHO
2
•H
2
O.
Method/Apparatus/Procedure:
The isothermal method was used. The mixtures were placed in glass vessels in a thermostat and stirred mechanically. Equilibrium was reached in 1.5-2 weeks. The lithium content of both phases was determined by flame photometry. The cadmium content was determined complexometrically. The composition of the solid phases was determined by Schreinemakers' method.
Source and Purity of Materials:
LiCHO
2
•H
2
O was prepared by neutralizing 85% formic acid with p.a. grade LiOH. Cadmium formate was obtained from p.a. grade cadmium carbonate.
Estimated Errors:
Temperature: The temperature was kept constant to within ± 0.05 °C.