IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Cadmium formate with Water

   (1) Cadmium formate; Cd(CHO2)2; [4464-23-7]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Nadzhafyan, K.A.; Kaganskii, I.M.; Stamikosto, E.V.; Erayser, L.N.; Skulskaya, E.I., Zh. Neorg. Khim. 34, 2152 (1989).

   Temperature = 20.05 ºC to 50.05 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(CHO2)2 - H2O system.
t/°CPhaseMass Fraction w1m1 [mol kg-1]aSolid Phase(s)b
t = 20.05 °CLiquid phase Cd(CHO2)212.0   0.674A
t = 25.05 °C (c)Liquid phase Cd(CHO2)214.10  0.809A
t = 30.05 °CLiquid phase Cd(CHO2)215.0    0.872A
t = 40.05 °CLiquid phase Cd(CHO2)219.3  1.181A
t = 50.05 °CLiquid phase Cd(CHO2)226.2   1.754A
t = 50.05 °CLiquid phase Cd(CHO2)227.77  1.899A
   a  These values were calculated by the compilers.
   b  The solid phase is: A = Cd(CHO2)2•2H2O.
   c  These values were determined using the isothermal method. The other values were obtained using the polythermal method.

   The isothermal and polythermal method were used.1 Equilibrium was achieved in 1.5-2 weeks. The cadmium content was determined by complexometric titration using Eriochrome Black T as indicator. The solid phase was identified using Schreinemakers', spectroscopic , thermal and x-ray methods.

Source and Purity of Materials:
   Cd(CHO2)2•2H2O was prepared from c.p. grade cadmium carbonate and 85% formic acid. The product was recrystallised twice from 1% formic acid. Purity is not specified. The water is freshly distilled.

Estimated Errors:

   Temperature: The temperature was controlled to within ±1 °C1

   1K. A. Nadzharyan, L. S. Itkina, and I. N. Lepeshkov, Zh. Neorg. Khim. 25, 1676 (1980).