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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Cadmium formate with Cadmium chloride and Water
Components:
(1) Cadmium chloride; CdCl2; [10108-64-2]
NIST Chemistry WebBook
for detail
(2) Cadmium formate; Cd(CHO2)2; [4464-23-7]
NIST Chemistry WebBook
for detail
(3) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Stoilova, D., Bulg. Chem. Commun. 25, 249-57 (1992).
Variables:
Concentration = Composition at 60 ºC
Prepared By:
Chr. Balarew and St. Trendafilova
Experimental Data:
(Notes on the Nomenclature)
(Please see footnotes following the table(s).)
Solubility values in the Cd(CHO
2
)
2
-CdCl
2
-H
2
O system at 60 °C.
Chemical
1
Phase
Mass Fraction w
1
m
1
[mol kg-1]
a
Chemical
2
Mass Fraction w
2
m
2
[mol kg-1]
a
Solid Phase(s)
b
Cd(CHO2)2
Liquid
37.30
2.938
CdCl2
----
----
A
Cd(CHO2)2
Liquid
41.97
4.267
CdCl2
9.44
1.060
A
Cd(CHO2)2
Liquid
46.44
6.170
CdCl2
16.38
2.403
A
Cd(CHO2)2
Liquid
47.88
6.999
CdCl2
18.33
2.959
eutonic
Cd(CHO2)2
Liquid
47.01
7.084
CdCl2
20.21
3.363
B
Cd(CHO2)2
Liquid
37.29
4.861
CdCl2
24.82
3.573
B
Cd(CHO2)2
Liquid
30.54
3.644
CdCl2
28.06
3.697
B
Cd(CHO2)2
Liquid
19.27
2.376
CdCl2
40.67
5.538
B
Cd(CHO2)2
Liquid
15.52
2.310
CdCl2
51.29
8.430
B
Cd(CHO2)2
Liquid
11.49
1.580
CdCl2
52.60
7.991
C
Cd(CHO2)2
Liquid
7.89
1.014
CdCl2
53.67
7.617
C
Cd(CHO2)2
Liquid
----
----
CdCl2
57.76
7.441
C
Notes:
a
The molality values were calculated by the compilers.
b
The solid phases are: A = Cd(CHO
2
)
2
•2H
2
O; B = Cd(CHO
2
)
2
•CdCl
2
; C = CdCl
2
•H
2
O.
Method/Apparatus/Procedure:
The method used was the isothermal decrease of supersaturation. Equilibrium was reached in 10-15 hrs. The cadmium content was determined complexometrically. The chloride ion content was determined volumetrically by the Mohr method. The cadmium formate concentration was estimated by difference. The composition of the ideally suction-dried solid phase was determined by the Schreinemakers method. X-ray diffraction and DT analysis were also used.
Source and Purity of Materials:
The cadmium chloride was p. a. grade (Merck). The cadmium formate was prepared by the reaction of dilute formic acid with cadmium oxide, carbonate or hydroxide, all of which were p.a. grade (Merck or Fluka).
Estimated Errors:
Solubility: No information is given.
Temperature: No information is given.