SDS Volume
Volume 73. Metal and Ammonium Formate Systems, p None
Source Publication
Tatsievskaya, G. I.; Konovalova, N. N.; Kushner, T. M.; Serafimov, L. A.; Tr. Mosk. Inst. Tonkol Khim. Tekhnol. 3, 109 (1973).
Conditions:
Boiling Pt.: 374.6 - 421.6 $\pu{K}$
Compiler:
Methodology:
The polythermal titration method was used. The transition from a homogeneous state to a saturated solution was determined by the appearance of a suspension which disappeared after boiling for six hours. The concentration titration step was about 0.3 mass %. Boiling points were determined ebulliometrically at 101.325 kPa. The $\ce{NaCHO2}$ and $\ce{CH2O2}$ contents were determined by titration with a $\pu{0.4 N} \ce{HCl}$ solution in methanol using Eriochrome Black T as the indicator. The water content was determined by the Fisher titration method.
Sample Information:
- The $\ce{NaCHO2}$ was recrystallized followed by drying. Purity was not specified. $\ce{CH2O2}$ was purified by a method described elsewhere [1]. BP = 373.9 K at 101325 kPa; $n$ = 1.3714. The water was distilled.
Measurement Errors:
Ambient temperature: No information is given.
Mass concentration (m/v) (1): No information is given.
Methodology Citation
1 Kushner, T. M.; Tatsievskaya, G. I.; Serafimov, L. A.; Zh. Fiz. Khim. 41, 237 (1967).
System Components:
- Sodium formate, $\ce{ NaCHO2 }$; [141-53-7] NIST WebBook
- Formic acid, $\ce{ CH2O2 }$; [64-18-6] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| 100w1 | 100w2 | 100w3 | $100 x_{1}$ | $100 x_{2}$ | $100 x_{3}$ |
|---|---|---|---|---|---|
| 59.6 | 40.4 | 0.0 | 50.0a | 50.0a | 0.0a |
| 59.4 | 34.3 | 6.3 | 44.4a | 37.9a | 18a |
| 61.1 | 26.3 | 12.6 | 41.4a | 26.3a | 32.2a |
| 61.4 | 18.6 | 20.0 | 37.4a | 16.7a | 45.9a |
| 62.9 | 12.6 | 24.5 | 36.2a | 10.7a | 53.2a |
| 65.4 | 4.8 | 29.8 | 35.4a | 3.8a | 60.8a |
| 65.5 | 4.5 | 30.0 | 35.3a | 3.6a | 61.1a |
| 66.7 | 0.0 | 33.3 | 34.7a | 0.0a | 65.3a |
(a) These values were calculated by the compiler.
