SDS Volume
Volume 73. Metal and Ammonium Formate Systems, p None
Source Publication
Gyunner, E. A.; Melnichenko, N. D.; Yakhkind, N. D.; Velmozhnii, I. S.; Katseva, G. N.; Zh. Neorg. Khim. 24, 2172-2175 (1979).
Conditions:
Room Temp: Composition at 20 °C
Compilers:
St. Trendafilova, Chr. Balarew
Methodology:
The system is studied by the method of physico-chemical analysis. After attaining the equilibrium, the residue concentrations of $\ce{Zn^{2+}}$ and $\ce{OH^{-}}$ are measured and also refractive index ($n$) of the liquid phases. The methods of measurements are according to [1].
Sample Information:
- The zinc formate is obtained from zinc carbonate and formic acid. The obtained product is twice recrystallized.
Measurement Errors:
Ambient temperature: t = ±0.05°C.
Methodology Citation
1 Gyunner, E. A.; Melnichenko, N. D.; Yakhkind, N. D.; Bobrishev, G. N.; Katseva, G. N.; Zh. Neorg. Khim. 23, 711 (1978).
System Components:
- Zinc formate, $\ce{ Zn(CHO2)2 }$; [557-41-5] NIST WebBook
- Sodium hydroxide, $\ce{ NaOH }$; [1310-73-2] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| $100 x_{2}$ | $100 x_{1}$ | Phase (s) () a |
|---|---|---|
| 10.0 | 1.63 | A |
| 15.0 | 1.63 | A |
| 20.0 | 1.62 | A |
| 25.0 | 1.59 | A |
| 30.0 | 1.57 | A |
| 33.3 | 1.60 | A |
| 40.0 | 1.59 | A |
| 45.0 | 1.61 | A |
| 50.0 | 1.60 | A |
| 55.0 | 1.60 | A |
| 60.0 | 1.58 | A |
| 62.5 | 1.67 | A |
| 65.0 | - | A |
| 66.7 | 2.00 | B |
| 70.0 | 2.03 | B |
| 75.0 | 1.98 | B |
| 80.0 | 1.99 | B |
| 85.0 | - | B |
| 90.0 | - | B |
(a) The solid phases are: A = Zn5(OH)8(CHO2)2; B = Zn(OH)2.
