SDS Volume (1997)
Volume 59. Polycyclic Aromatic Hydrocarbons: Binary Non-aqueous Systems, Part II Solutes F-Z, p None
Original Measurements
Variables:
Room Temp: Temperature $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
Analytical balance, differential thermal analyzer and differential scanning calorimeter.
Binary mixtures prepared by weight. Phase diagram determined by combined differential thermal analysis and differential scanning calorimetric methods, supplemented by visual observation.
Source and Purity of Materials:
- Purity and chemical source were not specified in paper, was recrystallized from aqueous ethanol before use.
- Purity and chemical source were not specified in paper, was recrystallized from both ethanol and methanol before use.
Estimated Errors:
Ambient temperature: T/K: precision ±0.5 (compiler). x1: ±0.002 (compiler).
Components:
- Naphthalene, $\ce{ C10H8 }$; [91-20-3] NIST WebBook
- 1,3-Dinitrobenzene, $\ce{ C6H4N2O4 }$; [99-65-0] NIST WebBook
Experimental Data
| $T$ ($\pu{K}$) | $x_{1}$ | $x_{2}$ |
|---|---|---|
| 363.8 | 0.000 | 1.000 |
| 356.4 | 0.123 | 0.877 |
| 348.3 | 0.243 | 0.757 |
| 341.8 | 0.310 | 0.690 |
| 337.7 | 0.354 | 0.646 |
| 332.2 | 0.415 | 0.585 |
| 326.1 | 0.469 | 0.531 |
| 324.6 | 0.482 | 0.518 |
| 325.0 | 0.503 | 0.497 |
| 324.6 | 0.543 | 0.457 |
| 324.3 | 0.565 | 0.435 |
| 323.6 | 0.589 | 0.411 |
| 325.0 | 0.619 | 0.381 |
| 328.9 | 0.649 | 0.351 |
| 330.7 | 0.662 | 0.328 |
| 332.7 | 0.699 | 0.301 |
| 338.7 | 0.755 | 0.245 |
| 345.2 | 0.839 | 0.161 |
| 349.6 | 0.923 | 0.077 |
| 353.7 | 1.000 | 0.000 |
Compiler: Phase diagram shows formation of a 1:1 naphthalene - 1,3-dintrobenzene molecular compound. Two eutectic points occur at about x1 = 0.476 and T/K = 324.2 and at x1 = 0.600 and T/K = 323.2.
