SDS Volume
Volume 58. Polycyclic Aromatic Hydrocarbons: Binary Non-aqueous Systems, Part I Solutes A-E, p 170
Source Publication
Acree Jr., W. E.; Pontikos, N. M.; Judy, C. L.; Int. J. Pharm. 1986, 31, 225-230.
Conditions:
Room Temp: 303, 308 and 313 $\pu{K}$
Compiler:
Methodology:
Constant temperature bath, calorimetric thermometer, and an ultraviolet/visible spectrophotometer. 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 spectrophotometrically at 250 nm.
Sample Information:
- 99%, Aldrich Chemical Company, Milwaukee, Wisconsin, USA, recrystallized three times from methanol.
- Gold Label, 99+%, Aldrich Chemical Company, was stored over molecular sieves and distilled shortly before use.
Measurement Errors:
Ambient temperature: T/K: ±0.05.
Mole fraction - Liquid (1): x1: ±1% (relative error).
System Components:
- Biphenyl, $\ce{ C12H10 }$; [92-52-4] NIST WebBook
- Cyclohexane, $\ce{ C6H12 }$; [110-82-7] NIST WebBook
Experimental Data
| $T$ (°C) | $x_{1}$ | $x_{2}$ |
|---|---|---|
| 30.0 | 0.2471 | 0.7529 |
| 35.0 | 0.3175 | 0.6825 |
| 40.0 | 0.3948 | 0.6052 |
