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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Lithium formate with Cesium formate and Water
Components:
(1) Cesium formate; CsCHO2; [3495-36-1]
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.; Petrova, E., Zh. Neorg. Khim. 24, 1103-9 (1979); Russ. J. Inorg. Chem. (Engl. Transl.) 24, 613-8 (1979).
Variables:
Concentration = Composition at 25 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
- CsCHO
2
- H
2
O system at 25 °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
27.99
7.481
CsCHO2
-
-
A
LiCHO2
Liquid
27.70
7.451
CsCHO2
0.57
0.059
A
LiCHO2
Liquid
28.60
7.916
CsCHO2
1.86
0.150
A+B
LiCHO2
Liquid
26.28
8.140
CsCHO2
11.58
1.047
B
LiCHO2
Liquid
25.76
8.256
CsCHO2
14.19
1.328
B
LiCHO2
Liquid
24.41
8.879
CsCHO2
22.68
2.409
B
LiCHO2
Liquid
23.36
9.099
CsCHO2
27.23
3.097
B
LiCHO2
Liquid
21.26
8.266
CsCHO2
29.24
3.32
B
LiCHO2
Liquid
17.82
13.59
CsCHO2
56.95
12.69
B
LiCHO2
Liquid
19.32
26.39
CsCHO2
66.59
26.56
B
LiCHO2
Liquid
16.17
14.44
CsCHO2
62.28
16.24
B+C
LiCHO2
Liquid
15.95
28.16
CsCHO2
73.15
37.72
C
LiCHO2
Liquid
11.60
25.93
CsCHO2
79.79
52.09
C
LiCHO2
Liquid
12.35
29.64
CsCHO2
79.63
55.80
C
LiCHO2
Liquid
12.35
39.35
CsCHO2
81.61
75.94
C
LiCHO2
Liquid
7.49
17.3
CsCHO2
84.20
56.95
C
LiCHO2
Liquid
7.00 (b)
15.0
CsCHO2
84.0
52.5
C+D
LiCHO2
Liquid
6.66
11.2
CsCHO2
81.85
40.04
D
LiCHO2
Liquid
7.94
11.7
CsCHO2
78.96
33.88
D
LiCHO2
Liquid
2.32
2.15
CsCHO2
76.87
20.76
D
LiCHO2
Liquid
4.57
5.29
CsCHO2
78.80
26.63
D
LiCHO2
Liquid
5.09
8.36
CsCHO2
83.19
39.89
D
LiCHO2
Liquid
3.14
4.83
CsCHO2
84.34
37.86
D
LiCHO2
Liquid
-
-
CsCHO2
87.46
39.2
D
Notes:
a
The solid phases are: A = LiCHO
2
•H
2
O; B = LiCHO
2
; C = LiCHO
2
•CsCHO
2
; D = CsCHO
22
O.
b
Found by graphical way (author).
Method/Apparatus/Procedure:
The isothermal method was used. Equilibrium was reached in 6 days. The lithium content of both phases was determined by flame photometry. The formate content was determined permanganometrically. The cesium content was the difference between the total formate content and the formate present as lithium formate. It was also determined by the tetraphenyl borate method. The composition of the solid phases was determined by Schreinemakers' method.
Source and Purity of Materials:
LiCHO
2
was prepared by heating p.a. grade LiCHO
2
• H
2
O at 120 °C. CsCHO
2
was obtained by neutralizing 85% p.a. grade formic acid with a pure CsOH. After evaporating up to 130 °C and cooling, the crystals were dried over H
2
SO
4
in a vacuum.
Estimated Errors:
Solubility: No information is given.
Temperature: No information is given.