Compilation - Indole with Benzene (IUPAC SDS Volume 59)
SDS Volume (2249)
Volume 59. Polycyclic Aromatic Hydrocarbons: Binary Non-aqueous Systems, Part II Solutes F-Z, p 66
Original Measurements
Yokoyama, C.; Ebina, T.; Takahashi, S.; J. Chem. Eng. Data 1993, 38, 583-586.
Variables:
Room Temp: Temperature $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
Constant temperature bath and a precision thermometer.
Mixtures of known concentrations sealed in glass ampoules and placed in constant temperature to equilibrate. Samples were rotated while bath temperature slowly increased. Solubility determined by visual noting the same temperature at which the last trace of solid solute disappeared.
Source and Purity of Materials:
- 99.9%, Aldrich Chemical Company, Milwaukee, Wisconsin, USA, was used as received.
- 99.9+%, Wako Pure Chemical Ind Ltd., was dried over molecular sieves prior to use.
Estimated Errors:
Ambient temperature: T/K: precision ±0.02. x1: ±0.0001.
Components:
- Indole, $\ce{ C8H7N }$; [120-72-9] NIST WebBook
- Benzene, $\ce{ C6H6 }$; [71-43-2] NIST WebBook
Experimental Data
| $T$ ($\pu{K}$) | $x_{1}$ | $x_{2}$ |
|---|---|---|
| 278.73 | 0.0000 | 1.0000 |
| 275.05 | 0.0521 | 0.9479 |
| 268.31 | 0.2000 | 0.8000 |
| 266.37 | 0.2510 | 0.7490 |
| 269.32 | 0.2810 | 0.7190 |
| 274.58 | 0.3490 | 0.6510 |
| 279.40 | 0.4010 | 0.5990 |
| 288.54 | 0.5010 | 0.4990 |
| 303.68 | 0.7150 | 0.2850 |
| 309.88 | 0.7920 | 0.2080 |
| 317.59 | 0.9020 | 0.0980 |
| 326.26 | 1.0000 | 0.0000 |
Authors report eutectic point occurs at x1 = 0.2552 and T/K = 265.90.
