SDS Volume (1998)
Volume 59. Polycyclic Aromatic Hydrocarbons: Binary Non-aqueous Systems, Part II Solutes F-Z, p None
Original Measurements
Kremann, R.; Monatsch. Chem. 1904, 25, 1271-1292.
Variables:
Room Temp: Temperature $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
Binary mixtures prepared by weight. While the experimental details were not given in the paper, compiler speculates (based upon quantity of material used) that the sample was sealed in a glass container, temperature slowly varied, and the phase diagram determined by visually noting the temperature at which the last/first crystal of solid disappeared/appeared.
Source and Purity of Materials:
- Purity and chemical source were not specified in paper.
- Purity and chemical source were not specified in paper.
Estimated Errors:
Ambient temperature: T/K: precision ±0.2 (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
| $T$ ($\pu{K}$) | $x_{1}$ | $x_{2}$ |
|---|---|---|
| 360.7 | 0.000 | 1.000 |
| 356.2 | 0.061 | 0.939 |
| 352.2 | 0.125 | 0.875 |
| 348.2 | 0.211 | 0.789 |
| 339.7 | 0.280 | 0.720 |
| 333.2 | 0.339 | 0.661 |
| 326.2 | 0.401 | 0.599 |
| 323.7 | 0.423 | 0.577 |
| 323.8 | 0.445 | 0.555 |
| 323.6 | 0.456 | 0.544 |
| 323.6 | 0.483 | 0.517 |
| 324.0 | 0.500 | 0.500 |
| 324.0 | 0.509 | 0.491 |
| 323.8 | 0.537 | 0.463 |
| 323.6 | 0.546 | 0.454 |
| 323.7 | 0.567 | 0.433 |
| 324.0 | 0.567 | 0.433 |
| 325.0 | 0.608 | 0.392 |
| 325.2 | 0.617 | 0.383 |
| 324.9 | 0.619 | 0.381 |
| 328.7 | 0.647 | 0.353 |
| 329.5 | 0.660 | 0.340 |
| 334.5 | 0.724 | 0.276 |
| 337.4 | 0.757 | 0.243 |
| 340.7 | 0.795 | 0.205 |
| 345.7 | 0.879 | 0.121 |
| 348.2 | 0.911 | 0.089 |
| 351.7 | 0.968 | 0.032 |
| 353.8 | 1.000 | 0.000 |
Phase diagram suggests formation of a 1:1 naphthalene - 1,3-dinitrobenzene molecular compound having a melting temperature of circa T/K = 324.0. Two eutectic points occur at about x1 = 0.42 and T/K = 323.6 and at x1 = 0.60 and T/K = 323.7.
