SDS Volume (4726)
Volume 73. Metal and Ammonium Formate Systems, p None
Original Measurements
Dunn, L. J.; Philip, J. C.; J. Chem. Soc. 658 (1934).
Variables:
Room Temp: Composition at 25 °C
Prepared by:
Method/Apparatus/Procedure:
The isothermal method was used. The methods of analysis are not described. The composition of the solid phases was determined by the Schreinemakers method.
Source and Purity of Materials:
- The salt was prepared from pure formic acid and magnesium carbonate or hydroxide; purity is not specified. Commercial formic acid was used.
Estimated Errors:
Ambient temperature: The temperature was controlled to within ±0.01°C. Nothing is said about the solubility values.
Components:
- Magnesium formate, $\ce{ Mg(CHO2)2 }$; [557-39-1] NIST WebBook
- Formic acid, $\ce{ CH2O2 }$; [64-18-6] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Composition of saturated solutions at 25°C.
| 100w2 | 100w1 | 100w3 | $100 x_{2}$ | $100 x_{1}$ | $100 x_{3}$ | Phase (s) () |
|---|---|---|---|---|---|---|
| 0.0 | 12.23 | 87.77 | 0.0 | 2.15 | 97.85 | Mg(CHO2)2·2H2O |
| 15.73 | 10.10 | 74.17 | 7.52 | 1.94 | 90.54 | Mg(CHO2)2·2H2O |
| 31.28 | 8.01 | 60.71 | 16.50 | 1.70 | 81.80 | Mg(CHO2)2·2H2O |
| 46.70 | 6.22 | 47.08 | 27.56 | 1.48 | 70.96 | Mg(CHO2)2·2H2O |
| 69.90 | 4.68 | 25.42 | 51.13 | 1.38 | 47.49 | Mg(CHO2)2·2H2O |
| 76.20 | 3.19 | 20.61 | 58.56 | 0.99 | 40.45 | Mg(CHO2)2·2H2O |
| 90.80 | 2.15 | 7.05 | 82.79 | 0.79 | 16.42 | Mg(CHO2)2·2H2O |
(a) These values were calculated by the compiler.
