IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Sodium formate with Water
Components:
   (1) Sodium formate; NaCHO2; [141-53-7]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
Original Measurements:
   Sidgwick, N.V.; Gentle, J.A.H.R., J. Chem. Soc. 121, 1837 (1922).

 Variables:
   Temperature = -4.29 ºC to -18.04 ºC

 Prepared By:
   Chr. Balarew and St. Trendafilova

 Experimental Remarks:
   The molality values were calculated by the compilers.

 Experimental Data:   (Notes on the Nomenclature)
  
Composition of the liquid equilibrium phase.
t/°CPhaseMass Fraction w1100 * Mole Fraction1m1 [mol kg-1]Solid Phase(s)
-4.29Liquid7.242.021.15ice
-7.02Liquid11.423.3031.896ice
-11.02Liquid16.955.1273.001ice
-18.04Liquid24.868.0354.865ice
 Method/Apparatus/Procedure:
   The freezing points were measured in a Beckmann apparatus. Analysis was done gravimetrically by evaporating the solution to dryness.

 Source and Purity of Materials:
   The sodium formate was prepared by neutralizing fotmic acid with the carbonate or hydroxide. Commercial 80% formic acid was distilled in a vacuum at 70 °C with enough sulfuric acid to remove the water.

 Estimated Errors:
   Solubility: No information is given.
   Temperature: No information is given.