Compilation - Copper(II) formate with Water (IUPAC SDS Volume 73)
SDS Volume (4777)
Volume 73. Metal and Ammonium Formate Systems, p None
Original Measurements
Gauthier, J.; Thèses faculté des sciences de l'université de Paris, 65-71 (1958).
Variables:
Room Temp: -0.595 - 64 °C
Prepared by:
Method/Apparatus/Procedure:
It appears that the isothermal method was used. Above 0°C a Dewar flask with a Robertean thermometer graduated in 0.01 °C was used. Below 0 °C a mixture of water and salt was used to cool a jacket containing acetone or methanol. The copper content was determined electrolytically.
Source and Purity of Materials:
- Distilled water was used.
Estimated Errors:
Mass concentration (m/v) (1): ±0.07 mass% (from the eutectic point).
Components:
- Copper formate, $\ce{ Cu(CHO2)2 }$; [544-19-4] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Solubility polytherm of the Cu(CHO2)2-H2O system
| $T$ (°C) | 100w1 | m1 (mol/kg) | Phase (s) () |
|---|---|---|---|
| -0.155 | 0.59 | 0.0386 | Ice |
| -0.275 | 1.19 | 0.0784 | Ice |
| -0.285 | 1.27 | 0.0840 | Ice |
| -0.345 | 1.52 | 0.1003 | Ice |
| -0.375 | 1.71 | 0.1131 | Ice |
| -0.445 | 2.07 | 0.1378 | Ice |
| -0.505 | 2.41 | 0.1610 | Ice |
| -0.515 | 2.44 | 0.1630 | Ice |
| -0.555 | 2.71 | 0.1814 | Ice |
| -0.585 | 2.86 | 0.1914 | Ice + A |
| -0.57 | 2.92 | 0.1956 | Ice + A |
| -0.595 | 2.96 | 0.1988 | - |
| 0 | 2.97 | 0.1996 | A |
| 10 | 4.63 | 0.3162 | A |
| 15 | 6.07 | 0.4206 | A |
| 20 | 7.32 | 0.5141 | A |
| 25 | 9.92 | 0.7172 | A |
| 30 | 11.73 | 0.8652 | A |
| 35 | 16.64 | 1.3000 | A |
| 56 | 24.67 | 2.132 | B |
| 64 | 31.12 | 2.942 | B |
(a) These values were calculated by the compiler.
(b) The solid phases are: A = Cu(CHO2)2·4H2O, B = Cu(CHO2)2·2H2O.
