IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Calcium formate with Water

Components:
   (1) Calcium formate; Ca(CHO2)2; [544-17-2]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Lumsden, J.C., J. Chem. Soc. (London) 81, 355 (1902).

Variables:
   Temperature = 0 ºC to 100 ºC

Prepared By:
   St. Trendafilova and Chr. Balarew

Experimental Remarks:

   The molality values were calculated by the compilers.

Experimental Data:   (Notes on the Nomenclature)
(Please see footnotes following the table(s).)

Solubility of calcium formate in water.
t/°C	g₁/g₂	Phase	Mass Fraction w₁	m₁ [mol kg-1]	Solid Phase(s)^a
0	16.15	Liquid	13.90	1.241	A
10	16.37	Liquid	14.07	1.258	A
20	16.60	Liquid	14.24	1.276	A
30	16.82	Liquid	14.40	1.293	A
40	17.05	Liquid	14.57	1.310	A
50	17.27	Liquid	14.73	1.327	A
60	17.50	Liquid	14.89	1.345	A
70	17.72	Liquid	15.09	1.362	A
80	17.95	Liquid	15.22	1.379	A
90	18.17	Liquid	15.38	1.396	A
100	18.40	Liquid	15.54	1.414	A

Notes:
   ^a  The solid phase is: A = Ca(CHO₂)₂.

Method/Apparatus/Procedure:
   The isothermal method was used. The solid and liquid phases were separated from each other by filtration. Each of the phases was then analyzed but no description of the analytical methods is given.

Source and Purity of Materials:
   The calcium salt was prepared by the action of Kahlbaum pure acid on precipitated CaCO₃. Water was removed from the reaction mixture by evaporation and the solid was then recrystallized from water.

Estimated Errors:
   Solubility: No information is given.