IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Lithium formate with Sodium formate and Water

Components:
   (1) Lithium formate; LiCHO2; [556-63-8]  NIST Chemistry WebBook for detail
   (2) Sodium formate; NaCHO2; [141-53-7]  NIST Chemistry WebBook for detail
   (3) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Portnova, S.M.; Itkina, L.S., Zh. Neorg. Khim. 24, 213-7 (1979); Russ. J. Inorg. Chem.(Engl. Transl.) 24, 119-22 (1979).

Variables:

   Concentration = Composition at 50 ºC

Prepared By:
   Chr. Balarew and St. Trendafilova

Experimental Data:   (Notes on the Nomenclature)

Solubility values in the LiCHO₂-NaCHO₂-H₂O system at 50 °C.
Chemical₁	Phase	Mass Fraction w₁	m₁ [mol kg-1]	Chemical₂	Mass Fraction w₂	m₂ [mol kg-1]	Solid Phase(s)
LiCHO2	Liquid phase	36.04	10.845	NaCHO2	---	---	A
LiCHO2	Liquid phase	32.68	10.80	NaCHO2	9.09	2.30	A
LiCHO2	Liquid phase	29.33	10.25	NaCHO2	15.58	4.158	A
LiCHO2	Liquid phase	23.29	8.658	NaCHO2	24.94	7.08	A
LiCHO2	Liquid phase	26.78	10.71	NaCHO2	25.09	7.665	A
LiCHO2	Liquid phase	26.78	10.98	NaCHO2	26.26	8.222	A
LiCHO2	Liquid phase	23.74	8.938	NaCHO2	25.23	7.269	a phase of variable composition
LiCHO2	Liquid phase	23.74	8.938	NaCHO2	25.14	7.231	a phase of variable composition
LiCHO2	Liquid phase	23.12	9.582	NaCHO2	30.44	9.638	a phase of variable composition
LiCHO2	Liquid phase	22.52	9.368	NaCHO2	31.21	9.918	a phase of variable composition
LiCHO2	Liquid phase	20.39	9.163	NaCHO2	36.78	12.63	a phase of variable composition
LiCHO2	Liquid phase	17.08	7.942	NaCHO2	41.53	14.75	a phase of variable composition
LiCHO2	Liquid phase	15.64	7.354	NaCHO2	43.43	15.60	a phase of variable composition
LiCHO2	Liquid phase	15.66	7.724	NaCHO2	45.32	17.08	B
LiCHO2	Liquid phase	13.84	6.412	NaCHO2	44.62	15.79	B
LiCHO2	Liquid phase	13.73	6.144	NaCHO2	43.05	14.65	B
LiCHO2	Liquid phase	11.95	5.186	NaCHO2	43.70	14.49	B
LiCHO2	Liquid phase	-	-	NaCHO2	49.97	14.687	B

Method/Apparatus/Procedure:
   The isothermal method was used. Three weeks were allowed for equilibration. The lithium and sodium content of both phases was determined by flame photometry. The composition of the solid phases was determined by IR spectroscopy, by DT analysis, by x-ray diffraction and crystallo-optically.

Source and Purity of Materials:
   The lithium and sodium formates were prepared by neutralization of formic acid with the corresponding metal hydroxides.

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