Components:
(1) 2-Butanol,
C4H10O; [78-92-2]
NIST WebBook
(2) 1,4-Dimethylbenzene,
C8H10; [106-42-3]
NIST WebBook
(3) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Letcher, T. M.; Siswana, P. M.; van der Watt, P.; Radloff, S.; J. Chem. Thermodyn. 21, 1053 (1989).
Variables:
Ambient temperature: 298 K
Prepared by:
Method/Apparatus/Procedure:
The titration method was used to determine binodal curve. A binary mixture of known composition was titrated with the third component until cloudiness was observed. Tie line compositions were related to the coexisting curve; water was determined by Karl Fischer titration. The methods were described in Ref. 1.
Source and Purity of Materials:
- Source not specified; used as received.
- Source not specified; recrystallized three times.
- Source not specified.
Estimated Errors:
Ambient temperature: Comp. <0.005 mole fraction (estimated authors' precision on binodal curve), <0.01 mole fraction (estimated authors' precision of tie lines).
Mass concentration (m/v) (1): Not reported.
References
1 Letcher, T. M.; Wootton, S.; Shuttleworth, B.; Heyward, C.; J. Chem. Thermodyn 18, 1037 (1986).
Experimental Values:
Compositions along the saturation curve
| T (°C) | T (K) | x1 | x2 | w1 | w2 |
|---|---|---|---|---|---|
| 25.0 | 298.2 | 0.0 | 9.98 x 10-1 | 0.0 | 9.997 x 10-1 |
| 25.0 | 298.2 | 7.0 x 10-2 | 9.16 x 10-1 | 5.1 x 10-2 | 9.47 x 10-1 |
| 25.0 | 298.2 | 1.34 x 10-1 | 8.42 x 10-1 | 1.00 x 10-1 | 8.96 x 10-1 |
| 25.0 | 298.2 | 2.48 x 10-1 | 6.93 x 10-1 | 1.98 x 10-1 | 7.91 x 10-1 |
| 25.0 | 298.2 | 3.41 x 10-1 | 5.55 x 10-1 | 2.94 x 10-1 | 6.85 x 10-1 |
| 25.0 | 298.2 | 4.12 x 10-1 | 4.31 x 10-1 | 3.86 x 10-1 | 5.78 x 10-1 |
| 25.0 | 298.2 | 4.62 x 10-1 | 3.22 x 10-1 | 4.74 x 10-1 | 4.73 x 10-1 |
| 25.0 | 298.2 | 4.94 x 10-1 | 2.31 x 10-1 | 5.54 x 10-1 | 3.71 x 10-1 |
| 25.0 | 298.2 | 5.03 x 10-1 | 1.50 x 10-1 | 6.27 x 10-1 | 2.68 x 10-1 |
| 25.0 | 298.2 | 4.86 x 10-1 | 8.5 x 10-2 | 6.83 x 10-1 | 1.71 x 10-1 |
| 25.0 | 298.2 | 4.14 x 10-1 | 2.1 x 10-2 | 7.12 x 10-1 | 5.2 x 10-2 |
| 25.0 | 298.2 | 3.60 x 10-1 | 6 x 10-3 | 6.89 x 10-1 | 1.6 x 10-2 |
| 25.0 | 298.2 | 3.30 x 10-1 | 2 x 10-3 | 6.66 x 10-1 | 6 x 10-3 |
| 25.0 | 298.2 | 3.22 x 10-1 | 0.0 | 6.61 x 10-1 | 0.0 |
| 25.0 | 298.2 | 5.1 x 10-2 | 0.0 | 1.81 x 10-1 | 0.0 |
Compositions of coexisting phases
| T (°C) | T (K) | w1 | w2 | x1 | x2 |
|---|---|---|---|---|---|
| 25.0 | 298.2 | 6.61 x 10-1 | 0.0 | 3.22 x 10-1 | 0.0 |
| 25.0 | 298.2 | 5.52 x 10-1 | 3.71 x 10-1 | 4.90 x 10-1 | 2.30 x 10-1 |
| 25.0 | 298.2 | 3.48 x 10-1 | 6.22 x 10-1 | 3.85 x 10-1 | 4.80 x 10-1 |
| 25.0 | 298.2 | 9.7 x 10-2 | 8.98 x 10-1 | 1.30 x 10-1 | 8.43 x 10-1 |
| 25.0 | 298.2 | 0.0 | 9.997 x 10-1 | 0.0 | 9.98 x 10-1 |
| 25.0 | 298.2 | 1.81 x 10-1 | 0.0 | 5.1 x 10-2 | 0.0 |
| 25.0 | 298.2 | 1.46 x 10-1 | 0.0 | 4.0 x 10-2 | 0.0 |
| 25.0 | 298.2 | 9.9 x 10-2 | 0.0 | 2.6 x 10-2 | 0.0 |
| 25.0 | 298.2 | 5.9 x 10-2 | 0.0 | 1.5 x 10-2 | 0.0 |
| 25.0 | 298.2 | 0.0 | 0.0 | 0.0 | 0.0 |
