Components:
(1) Sodium formate,
NaCHO2; [141-53-7]
NIST WebBook
(2) Formic acid,
CH2O2; [64-18-6]
NIST WebBook
Original Measurements
Groschuff, E.; Ber. Dtsch. Chem. Ges. 36, 1783-95 (1903).
Variables:
Ambient temperature: 0 - 85 °C
Prepared by:
Method/Apparatus/Procedure:
The freezing point method was used to study the system.
Source and Purity of Materials:
- NaCHO2·CH2O2 was prepared by the reaction of equimolar quantities of NaCHO2 and anhydrous formic acid and cooling. Composition of the salt: 59.66% NaCHO2 and 40.34% CH2O2. No other information is given.
Estimated Errors:
Ambient temperature: The compiler estimates that the temperature was controlled to within ±0.5 &d
Experimental Values:
Note: Note: The starting material was NaCHO2·CH2O2.Solubility of NaCHO2 in CH2O2.
| T (°C) | 100w1 | 100x1 | Phase (s) |
|---|---|---|---|
| 0.0 | 22.35 | 16.3 | NaCHO2·CH2O2 |
| 25.5 | 29.62 | 21.61 | NaCHO2·CH2O2 |
| 66.5 | 41.08 | 32.06 | NaCHO2·CH2O2 |
| 45.5 | 38.85 | 30.07 | NaCHO2 |
| 70.0 | 41.27 | 32.23 | NaCHO2 |
| 73.0 | 41.6 | 32.53 | NaCHO2 |
| 85.0 | 43.09 | 33.88 | NaCHO2 |
(a) These values were calculated by the compiler.
