Components:
(1) Naphthalene,
C10H8; [91-20-3]
NIST WebBook
(2) 2,4-Dinitro-1-methylbenzene,
C7H6N2O4; [121-14-2]
NIST WebBook
Original Measurements
Kofler, A.; Z. Phys. Chem. 1940, 187A, 201-210.
Variables:
Ambient temperature: Temperature
Prepared by:
Method/Apparatus/Procedure:
Analytical balance and a hot-stage microscope.
Binary mixtures prepared by weight. Melting point temperatures determined by thermal analysis method developed by the author, using a hot-stage microscope.
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: ±0.01 (compiler).
Experimental Values:
| T (K) | x1 | x2 |
|---|---|---|
| 343.7 | 0.0 | 1.0 |
| 338.2 | 1.4 x 10-1 | 8.6 x 10-1 |
| 329.7 | 2.6 x 10-1 | 7.4 x 10-1 |
| 329.7 | 3.2 x 10-1 | 6.8 x 10-1 |
| 331.7 | 3.8 x 10-1 | 6.2 x 10-1 |
| 333.2 | 4.9 x 10-1 | 5.1 x 10-1 |
| 333.2 | 5.9 x 10-1 | 4.1 x 10-1 |
| 332.2 | 6.8 x 10-1 | 3.2 x 10-1 |
| 340.2 | 7.7 x 10-1 | 2.3 x 10-1 |
| 345.2 | 8.5 x 10-1 | 1.5 x 10-1 |
| 350.7 | 9.3 x 10-1 | 7 x 10-2 |
| 353.7 | 1.0 | 0.0 |
(None) Author reports formation of a 1:1 naphthalene - 2,4-dinitro-1-methylbenzene molecular compound. Two eutectic points occur at x1 = 0.29 and T/K = 326.2 and at x1 = 0.66 and T/K = 330.2.
