Compilation - Naphthalene with Methylbenzene (IUPAC SDS Volume 59)
SDS Volume (1875)
Volume 59. Polycyclic Aromatic Hydrocarbons: Binary Non-aqueous Systems, Part II Solutes F-Z, p None
Original Measurements
Acree Jr., W. E.; Pontikos, N. M.; Judy, C. L.; Int. J. Pharm. 1986, 31, 225-230.
Variables:
Room Temp: 303, 308 and 313 $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
Constant temperature bath, calorimetric thermometer, and gas chromatograph.
Excess solute and solvent placed in amber glass bottles and allowed to equilibrate for several days at constant temperature. Attainment of equilibrium verified by repetitive measurements. Aliquots of saturated solutions transferred through a coarse filter into tared volumetric flasks, weighed and diluted with cyclohexane. Concentrations determined chromatographically.
Source and Purity of Materials:
- 99%, Aldrich Chemical Company, Milwaukee, Wisconsin, USA, recrystallized three times from methanol.
- Gold label, Aldrich Chemical Company, was stored over molecular sieves and distilled shortly before use.
Estimated Errors:
Ambient temperature: T/K: ±0.05. x1: ±1% (relative error).
Components:
- Naphthalene, $\ce{ C10H8 }$; [91-20-3] NIST WebBook
- Toluene, $\ce{ C7H8 }$; [108-88-3] NIST WebBook
Experimental Data
| $T$ (°C) | $x_{1}$ | $x_{2}$ |
|---|---|---|
| 30.0 | 0.3291 | 0.6709 |
| 35.0 | 0.3711 | 0.6289 |
| 40.0 | 0.4216 | 0.5784 |
