SDS Volume (4844)
Volume 73. Metal and Ammonium Formate Systems, p None
Original Measurements
Chaplygina, N. M.; Itkina, L. S.; Russ. J. Inorg. Chem. 29, 1518-9 (1984).
Variables:
Room Temp: Composition at 100 °C
Prepared by:
St. Trendafilova, Chr. Balarew
Method/Apparatus/Procedure:
The isothermal method was used. The mixtures were equilibrated in a furnace for two weeks. Phase separation was carried out in the furnace by centrifugation through a silver filter. The lithium content of both phases was determined by flame photometry. The aluminum content was determined complexometrically. The composition of the solid phases was determined by Schreinemakers' method, by IR spectroscopy, DT analysis and X-ray diffraction.
Source and Purity of Materials:
- Aluminum formate was prepared as described earlier [1], and so was lithium formate [2].
Estimated Errors:
Ambient temperature: No information is given.
Mass concentration (m/v) (1): No information is given.
References
1
Chaplygina, N. M.; Babievskaya, I. Z.; Kudinov, I. B.; Zh. Neorg. Khim. 29, 2206-10 (1984)
2
Itkina, L. S.; Chaplygina, N. M.; Petrova, E. V.; Russ. J. Inorg. Chem. 24, 440-3 (1979).
Components:
- Lithium formate, $\ce{ LiCHO2 }$; [556-63-8] NIST WebBook
- Aluminum formate, $\ce{ Al(CHO2)3 }$; [7360-53-4] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Solubility values in the LiCHO2-Al(CHO2)3-H2O system at 100°C.
| 100w1 | 100w2 | m1 (mol/kg) | m2 (mol/kg) | Phase (s) () |
|---|---|---|---|---|
| - | 1.44 | - | 0.090 | A |
| 28.30 | 8.40 | 7.748 | 0.866 | A |
| 33.84 | 9.66 | 10.09 | 0.660 | A |
| 43.05 | 15.42 | 15.24 | 1.125 | A + B |
| 58.32 | - | 26.93 | - | B |
(a) The solid phases are: A = Al(OH)(CHO2)2; B = LiCHO2.
(b) The molality values were calculated by the compilers.
