SDS Volume
Volume 73. Metal and Ammonium Formate Systems, p None
Source Publication
Storonkin, A. V.; Vasil'kova, I. V.; Potemin, S. S.; Vestn. Leningr. Univ.; Fiz. Khim. 10, 84-8 (1974).
Conditions:
Compiler:
Methodology:
The only information given is that a thermograph was used with a photorecorder and that the salt(s) were sealed under vacuum in Pyrex ampules.
Sample Information:
- Analytical grade $\ce{NaHCO3}$ and chemically pure $\ce{NaNO3}$ were heated 10-15 hrs at temperatures 50-60°C below their fusion temperatures.
Measurement Errors:
Ambient temperature: The compiler estimates the accuracy of the temperature measurements to be probably ±2 K.
Mass concentration (m/v) (1): No information is given.
System Components:
- Sodium formate, $\ce{ NaCHO2 }$; [141-53-7] NIST WebBook
- Sodium nitrate, $\ce{ NaNO3 }$; [7631-99-4] NIST WebBook
Experimental Data
Note 1: There is one eutectic: at 176°C and 100 x2 = 44.
Note 2: The data tabulated above were drawn by the compiler from Fig. 1 of the original paper.
| $T_{\rm{m}}$ ($\pu{K}$) | $T_{\rm{m}}$ (°C) | $100 x_{2}$ |
|---|---|---|
| 528 | 255 | 0 |
| 505 | 232 | 1E+1 |
| 491 | 218 | 2E+1 |
| 475 | 202 | 3E+1 |
| 455 | 182 | 4E+1 |
| 463 | 190 | 5E+1 |
| 488 | 215 | 6E+1 |
| 507 | 234 | 7E+1 |
| 525 | 252 | 8E+1 |
| 549 | 276 | 9E+1 |
| 579 | 306 | 1E+2 |
(a) The T/K values were calculated the compiler.
