IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Barium formate with Water

Components:
   (1) Barium formate; Ba(CHO2)2; [541-43-5]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Krasnitzki, E. R.,Monatsh. Chem. 8, 595 (1887).

Variables:
   Temperature = 1 ºC to 76 ºC

Prepared By:
   Chr.Balarew

Experimental Remarks:

   Author's Comments: The solubility data (g/100g H₂O) are mean values obtained by the cooling and the heating method.

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

Solubility of barium formate in water.
t/°C	g₁/g₂	Phase	Mass Fraction w₁^a	m₁ [mol kg-1]	Solid Phase(s)^b
1	27.76	Liquid	21.72	1.220	A
22.5	30.46	Liquid	23.34	1.339	A
38	34.35	Liquid	25.56	1.510	A
54	38.24	Liquid	27.66	1.681	A
63.6	39.44	Liquid	28.28	1.734	A
76	39.93	Liquid	28.53	1.755	A

Notes:
   ^a  These values and the molality values were calculated by the compiler.
   ^b  The solid phase is: A=Ba(CHO₂)₂.

Method/Apparatus/Procedure:
   The apparatus and method were described earlier.¹ The mixtures were shaken for 10-1.5 hours. Dilute sulfuric acid was added to a weighed sample. The mixture was evaporated on a water bath. The remaining sulfuric acid was driven off by heating to constant weight of barium sulfate.

Source and Purity of Materials:
   Barium carbonate was dissolved in formic acid to form the barium formate. The crystals were analyzed.

Estimated Errors:
   Solubility: The solubility is ± 0.2 g/100 g water.

References:
   ¹Raupenstrauch; Monatsh. Chem. 6, 563 (1885).