IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Calcium formate with Methanol

   (1) Calcium formate; Ca(CHO2)2; [544-17-2]  NIST Chemistry WebBook for detail
   (2) Methanol; CH4O; [67-56-1]  NIST Chemistry WebBook for detail

Original Measurements:
   Henstock, H., J. Chem. Soc. 1340 (1934).


Prepared By:
   T. A. Ageyeva

Experimental Data:   (Notes on the Nomenclature)
(Please see footnotes following the table(s).)
Solubility of calcium formate in methanol
t/°CMass Fraction w1100 * Mole Fraction1a
   a  These values were calculated by the compiler.

   The isothermal solubility method was used to study the systems. The apparatus used for the solubility measurements at 288.2 K was similar to that described earlier.1 At the boiling point, the solutions were prepared in a wide flask under reflux. To determine the quantity of solutes, portions of the saturated solutions were weighed at 288.2 K in a graduated pipette.2 A filter thimble was used to separate undissolved salt.3

Source and Purity of Materials:
   The salt was either purchased as the purest obtainable or prepared from pure materials. Methanol was purified first by removing acetone.4 Aldehyde was abstracted by treatment with iodine.5 Distillation with concentrated sulfuric acid removed basic substances as well as most of the water.6 Acidic substances were removed by distillation from caustic potash. The alcohol was finally distilled over metallic sodium; b.p. = 339.2 K at 758 mm.

Estimated Errors:

   Temperature: The only information given is that the temperature varied within ± 0.1 °C.

   1J. N. Brönsted and A. Petersen, J. Am. Chem. S. 43, 2265 (1921).
   2F. D. Chattaway and W. J. Lambert, J. Chem. S. 107, 1766 (1915).
   3T. J. Ward, Analyst 44, 137 (1919).
   4R. C. Menzies, J. Chem. S. 121, 2787 (1922).