SDS Volume
Volume 59. Polycyclic Aromatic Hydrocarbons: Binary Non-aqueous Systems, Part II Solutes F-Z, p None
Source Publication
Cullinane, N. M.; Rees, W. T.; Trans. Faraday Soc. 1940, 36, 506-514.
Conditions:
Room Temp: 328.5 - 457.6 $\pu{K}$
Compiler:
Methodology:
Mixtures were placed in small capillary tubes. Temperature was slowly varied with ample time given for equilibration. Transition temperatures determined by visual observations. Reported temperatures verified by repetitive measurements.
Sample Information:
- Purity and chemical source were not specified in paper, was sublimed and recrystallized from alcohol.
- Synthesized by the authors, was purified by sublimation and recrystallized from alcohol.
Measurement Errors:
Ambient temperature: T/K: ±precision 0.2 (compiler). x1: ±0.002 (compiler).
System Components:
- Phenothiazine, $\ce{ C12H9NS }$; [92-84-2] NIST WebBook
- Phenoxanthiin, $\ce{ C12H8OS }$; [262-20-4] NIST WebBook
Experimental Data
| $T$ ($\pu{K}$) | $T$ ($\pu{K}$) | $x_{1}$ | $x_{2}$ |
|---|---|---|---|
| 328.9 | 328.5 | 0.000 | 1.000 |
| 360.5 | 330.8 | 0.113 | 0.887 |
| 396.8 | 335.5 | 0.292 | 0.708 |
| 425.0 | 344.1 | 0.537 | 0.463 |
| 437.0 | 352.6 | 0.661 | 0.339 |
| 449.1 | 373.5 | 0.832 | 0.168 |
| 456.5 | 413.4 | 0.972 | 0.028 |
| 457.6 | 456.8 | 1.000 | 0.000 |
(a) Phase diagram, given in the original paper, shows formation of a complete series of solid solutions. Melting points of binary mixtures lie between those of the two pure components. Tin refers to the temperature at which crystallization begins; Tfin is the temperature at which crystallization of the solid solution concludes.
