SDS Volume
Volume 73. Metal and Ammonium Formate Systems, p None
Source Publication
Groschuff, E.; Ber. Dtsch. Chem. Ges. 36, 1783-95 (1903).
Conditions:
Room Temp: -1 - 116 °C
Compilers:
St. Trendafilova, Chr. Balarew
Methodology:
The precise quantities of solute and solvent are weighed and mixed. After the solute has completely dissolved the mixture is cooled until a small quantity of precipitate is formed. The temperature at which the solid disappears is measured.
Sample Information:
- No information is given.
Measurement Errors:
Mass concentration (m/v) (1): There is some error due to loss of ammonia vapor, but this was not evaluated quantitatively.
System Components:
- Ammonium formate, $\ce{ NH4CHO2 }$; [540-69-2] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| $T$ (°C) | 100w1 | m1 (mol/kg) a | Phase (s) () |
|---|---|---|---|
| -1 | 50.0 | 15.9 | NH4CHO2 |
| 12.5 | 55.6 | 19.9 | NH4CHO2 |
| 20.0 | 58.9 | 22.7 | NH4CHO2 |
| 29.0 | 62.5 | 26.4 | NH4CHO2 |
| 39.0 | 66.7 | 31.8 | NH4CHO2 |
| 63.5 | 76.9 | 52.8 | NH4CHO2 |
| 116.0 | 100.0 | - | (m.p.) |
(a) These values were calculated by the compilers.
(b) Melting point.
