SDS Volume (4696)
Volume 73. Metal and Ammonium Formate Systems, p None
Original Measurements
Shklovskaya, R. M.; Arkhipov, S. M.; Tsibulevskaya, K. A.; Kidyarov, B. I.; Kuzina, V. A.; Russ. J. Inorg. Chem. 22, 1101-2 (1977).
Variables:
Room Temp: Composition at 25 °C
Prepared by:
Method/Apparatus/Procedure:
The isothermal method was used. One month was allowed for equilibration.
Source and Purity of Materials:
- Commercial CP grade $\ce{LiCHO2}$ was used (MP = 553.2 K). It was dehydrated at 393.2 K. Commercial AR grade formic acid was used. Source and purity of water are not specified.
Estimated Errors:
Ambient temperature: The temperature was controlled to within ±0.1 K.
Components:
- Lithium formate, $\ce{ LiCHO2 }$; [556-63-8] NIST WebBook
- Formic acid, $\ce{ CH2O2 }$; [64-18-6] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Solubility values in the LiCHO2-CH2O2-H2O system at 25°C.
| 100w1 | 100w2 | 100w3 | $100 x_{1}$ | $100 x_{2}$ | $100 x_{3}$ | Phase (s) () |
|---|---|---|---|---|---|---|
| 30.54 | 0 | 69.46 | 13.23 | 0 | 86.77 | A |
| 28.40 | 4.38 | 67.22 | 12.50 | 2.18 | 85.32 | A |
| 28.09 | 10.09 | 61.82 | 12.90 | 5.23 | 81.87 | A |
| 26.69 | 14.62 | 58.69 | 12.57 | 7.77 | 79.66 | A |
| 25.28 | 19.29 | 55.43 | 12.22 | 10.53 | 77.25 | A |
| 24.75 | 22.48 | 52.77 | 12.24 | 12.55 | 75.21 | A |
| 24.09 | 25.32 | 50.59 | 12.13 | 14.40 | 73.47 | A |
| 23.86 | 29.90 | 46.24 | 12.50 | 17.68 | 69.82 | A |
| 23.84 | 35.38 | 40.78 | 13.14 | 22.03 | 64.83 | A |
| 23.25 | 40.58 | 36.17 | 13.41 | 26.43 | 60.16 | A |
| 22.88 | 43.38 | 33.74 | 13.53 | 28.96 | 57.51 | A |
| 23.02 | 49.58 | 27.40 | 14.57 | 35.42 | 50.50 | A |
| 23.43 | 52.97 | 23.60 | 15.49 | 35.53 | 44.98 | A |
| 23.56 | 55.37 | 21.07 | 16.05 | 42.57 | 41.38 | A |
| 25.43 | 58.04 | 16.53 | 18.35 | 47.26 | 34.39 | A |
| 26.21 | 59.11 | 14.68 | 19.38 | 49.33 | 31.29 | A |
| 27.46 | 62.55 | 9.99 | 21.65 | 55.65 | 22.70 | A + B |
| 23.53 | 69.58 | 6.89 | 19.30 | 64.41 | 16.29 | B |
| 25.91 | 72.81 | 1.28 | 23.18 | 73.52 | 3.30 | B |
(a) These values were calculated by the compilers.
(b) The solid phases are: A = LiCHO2·H2O; B = LiCHO2.
