IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Calcium formate with Formic acid
Components:
   (1) Calcium formate; Ca(CHO2)2; [544-17-2]  NIST Chemistry WebBook for detail
   (2) Formic acid; CH2O2; [64-18-6]  NIST Chemistry WebBook for detail
Original Measurements:
   Kendall, J.; Adler, H., J. Am. Chem. Soc. 43, 1470 (1921).

 Variables:
   Temperature = 6.6 ºC to128.6 ºC

 Prepared By:
   T. A. Ageyeva

 Experimental Data:   (Notes on the Nomenclature)
  
The solubility of calcium formate in formic acid.
t/°C100 * Mole Fraction1Solid Phase(s)
8.40.0CH2O2
8.10.16CH2O2
7.70.48CH2O2
7.40.71CH2O2
7.20.93CH2O2
6.91.27CH2O2
6.61.53CH2O2
128.60.39Ca(CHO2)2
100.00.57Ca(CHO2)2
79.00.83Ca(CHO2)2
61.01.10Ca(CHO2)2
49.71.26Ca(CHO2)2
45.51.35Ca(CHO2)2
35.01.54Ca(CHO2)2
30.01.61Ca(CHO2)2
 Method/Apparatus/Procedure:
   The only information given is that the solubility values were measured by the freezing point method.

 Source and Purity of Materials:
   The calcium salt was prepared by dissolving a pure sample of the carbonate in 90% formic acid. The salt obtained was recrystallized several times from water and dried to constant weight at 413 K; purity is not specified. The formic acid was prepared by treating a c.p. product with B2O3. It was then distilled in vacuo until a product melting above 281.6 K was obtained.

 Estimated Errors:
   Solubility: Nothing is specified.
   Temperature: Nothing is specified.