Components:
(1) Ethylbenzene,
C8H10; [100-41-4]
NIST WebBook
(2) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Heidman, J. L.; Tsonopoulos, C.; Brady, C. J.; Wilson, G. M.; A. I. Ch. E. J. 1985, 31, 376-84.
Variables:
Ambient temperature: 311 - 568 K
Pressure: 0.01 - 10.7 MPa
Prepared by:
Method/Apparatus/Procedure:
Experimental procedure was similar to that used in ref. 1. Hydrocarbons were determined by gas chromatography and water by Karl Fischer titration. Critical points were determined by the synthetic method using visual observation. This aspect of the procedure is discussed in detail in the paper.
Source and Purity of Materials:
- Aldrich 99+ mol%; water free purity greater or equal to 99.9 mol%, checked by gas chromatography.
- Distilled; no details given.
Estimated Errors:
Ambient temperature: not stated.
Mass concentration (m/v) (1): ±5%, relative precision of replicate analyses.
Pressure: ±1%; type of error not stated.
References
Experimental Values:
Note: The three phase critical point was reported to be 568.1 ± 0.6 K, 10.68 ± 0.04 MPa and x1 = 5.83 × 10-3 (3.34 g(1)/100 g sln, compiler). The authors also report an equation providing a fit of their own and literature data over the range 273-568 K, viz.ln x1 = -185.1695 + 7348.55/T + 26.34525 ln T ln x2 = -0.37215 - 4.4626 (Tr-1 - 1) - 0.38596 (1 - Tr)1/3 - 2.59850 (1 - Tr)
where Tr = T / 568.1
Solubility of ethylbenzene in water
| T (K) | P (MPa) | x1 | MR1 (g1/100 g sln) |
|---|---|---|---|
| 311.5 | - | 3.2 x 10-5 | 1.9 x 10-2 |
| 367.6 | 1.11 x 10-1 | 8.6 x 10-5 | 5.1 x 10-2 |
| 423.4 | 6.27 x 10-1 | 2.19 x 10-4 | 1.29 x 10-1 |
| 479.5 | 2.32 | 6.0 x 10-4 | 3.5 x 10-1 |
| 536.1 | 6.5 | 3.25 x 10-3 | 1.88 |
| 552.8 | 8.59 | 3.75 x 10-3 | 2.17 |
(c) Not specified.
Solubility of water in ethylbenzene
| T (K) | P (MPa) | x2 | MR2 (g2/100 g sln) |
|---|---|---|---|
| 310.9 | 9.1 x 10-3 | 4.3 x 10-3 | 7.3 x 10-2 |
| 367.6 | 1.11 x 10-1 | 1.86 x 10-2 | 3.20 x 10-1 |
| 423.4 | 6.27 x 10-1 | 5.96 x 10-2 | 1.06 |
| 479.5 | 2.32 | 1.63 x 10-1 | 3.2 |
| 536.1 | 6.5 | 4.08 x 10-1 | 10.5 |
| 550.4 | 8.27 | 4.72 x 10-1 | 13.2 |
| 568.1 | 10.68 | 6.91 x 10-1 | 27.5 |
(a) Estimated by the authors from pure component data. (b) Three phase critical point
