NIST-IUPAC Solubility Data Series

Lithium formate with Potassium formate and Water (IUPAC SDS Volume 73)

SDS Volume

Volume 73. Metal and Ammonium Formate Systems, p None

Source Publication

Portnova, S. M.; Petrova, E. V.; Russ. J. Inorg. Chem. 30, 1045-8 (1985).

Conditions:

Room Temp: 25 - 273 °C

Compilers:

St. Trendafilova, St. Tepavitcharova

Methodology:

The isothermal method was used at 28 and 30 °C. Equilibrium was reached within 4 weeks. The potassium and lithium content of both phases was determined by flame photometry [1]. The potassium content of the solid phase was also determined by the tetraphenylborate method in an acetic acid medium [2]. No experimental details are given for the other temperatures.

Sample Information:

Measurement Errors:

Mass concentration (m/v) (1): Analytical error is ±5%

Methodology Citations

¹ Poluektov, N. S.; Methods of Analysis by Flame Photometry (Russ), 2nd ed. (Khimiya, Moscow, 1967), p. 308.
² Rusakova, G. G.; Zh. Anal. Khim. 18, 154 (1963).
³ Itkina, L. S.; Chaplygina, N. M.; Petrova, E. V.; Russ. J. Inorg. Chem. 24, 440-3 (1979).

System Components:

Lithium formate, $\ce{ LiCHO2 }$; [556-63-8] NIST WebBook
Potassium formate, $\ce{ KCHO2 }$; [590-29-4] NIST WebBook
Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook

Experimental Data

$T$ (°C)	100w₁	100w₂	$100 x_{1}$	$100 x_{2}$	m₁ (mol/kg) ^a	m₂ (mol/kg) ^a	Phase (s) () ^b
25	24.86^a	44.43^a	17.65	19.48	15.58	17.20	A + B
25	9.84^a	61.23^a	7.51	28.85	6.55	25.16	B + C
25	27.12^a	48.12^a	21.14	23.17	21.08	23.10	A
25	24.42^a	49.63^a	18.80	23.60	18.11	22.74	A
25	24.94^a	49.64^a	19.35	23.79	18.88	23.21	A
25	23.28^a	49.83^a	17.69	23.39	16.66	22.03	A
28	23.74^a	48.28^a	17.68	22.21	16.33	20.51	A
30	25.84^a	49.68^a	20.33	24.17	20.32	24.13	A + B + D
50	36.31^a	46.23^a	31.51	24.78	40.02	31.48	A + D
50	87.80^a	71.49^a	6.9	39.53	7.25	41.04	C + D
100	39.61^a	43.04^a	34.08	22.87	43.94	29.49	D + E
100	12.96^a	78.94^a	15.24	57.32	30.79	115.9	C + D
118	60.51^a	39.49^a	71.27	28.73	-	-	C + D
140	25.01^a	74.99^a	35.06	64.94	-	-	D + E
160	7.46^a	2.54^a	38.02	62.07	-	-	D
167	0.0^a	100.0^a	0.0	100.0	-	-	C
273	100.0^a	0.0^a	100.0	0.0	-	-	E