Components:
(1) 1-Propanol,
C3H8O; [71-23-8]
NIST WebBook
(2) Benzene,
C6H6; [71-43-2]
NIST WebBook
(3) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
McCants, J. F.; Jones, J. H.; Hopson, W. H.; Ind. Eng. Chem. 1953, 45, 454-6.
Variables:
Ambient temperature: 311 K
Prepared by:
Method/Apparatus/Procedure:
The titration method was used to obtain binodal curve. The samples of homogeneous binary mixture were placed in a constant temperature bath and titrated the third component to the cloud point. Each sample was agitated in the constant temperature bath for several minutes between drops of the third component. The temperatures of these systems were raised slightly (1°F) to obtain homogeneity and their refractive indexes were measured. The analytical method was used for tie lines. (a) A ternary mixture of known composition was shaken for several hours in constant temperature bath and after both phases were carefully seperated and their refractive indexes were determined. The intersections of the tie lines with the binodal curve were determined by refractive index interpolation between points of known composition used to determine the curve.
(b) The slopes of the tie lines were checked by determining tie lines by the graphical application of the lever rule as described in Ref. 1.
Source and Purity of Materials:
- Du Pont, refined; used as received; n(20°C,D)=1.3855, d(75°F,60°F)=0.800.
- Baker, thiophene free; used as received; n(20°C,D)=1.5004, d(75°F,60°F)=0.873
- Distilled; n(20°C,D)=1.3330.
Estimated Errors:
Ambient temperature: refractive index ±0.0001; concentration ±0.001 mass% (estimated by compiler).
Mass concentration (m/v) (1): Not reported.
References
1 Othmer, D. F.; Tobias, P. E.; Ind. Eng. Chem. 34, 690 (1942).
Experimental Values:
Compositions along the saturation curve
| T (°C) | T (K) | w1 | w2 | x1 | x2 |
|---|---|---|---|---|---|
| 100.0 | 310.9 | 0.0 | 9.97 x 10-1 | 0.0 | 9.871 x 10-1 |
| 100.0 | 310.9 | 2.59 x 10-1 | 7.05 x 10-1 | 2.811 x 10-1 | 5.886 x 10-1 |
| 100.0 | 310.9 | 3.31 x 10-1 | 6.03 x 10-1 | 3.261 x 10-1 | 4.570 x 10-1 |
| 100.0 | 310.9 | 4.34 x 10-1 | 4.73 x 10-1 | 3.917 x 10-1 | 3.284 x 10-1 |
| 100.0 | 310.9 | 5.44 x 10-1 | 2.70 x 10-1 | 3.964 x 10-1 | 1.514 x 10-1 |
| 100.0 | 310.9 | 5.57 x 10-1 | 2.02 x 10-1 | 3.673 x 10-1 | 1.025 x 10-1 |
| 100.0 | 310.9 | 5.14 x 10-1 | 1.13 x 10-1 | 2.786 x 10-1 | 4.71 x 10-2 |
| 100.0 | 310.9 | 4.60 x 10-1 | 8.3 x 10-2 | 2.246 x 10-1 | 3.12 x 10-2 |
| 100.0 | 310.9 | 3.90 x 10-1 | 5.7 x 10-2 | 1.712 x 10-1 | 1.92 x 10-2 |
| 100.0 | 310.9 | 2.38 x 10-1 | 1.7 x 10-2 | 8.70 x 10-2 | 4.8 x 10-3 |
| 100.0 | 310.9 | 0.0 | 5 x 10-3 | 0.0 | 1.2 x 10-3 |
(a) See Method. (b) See Method.
Compositions of coexisting phases
| T (°C) | T (K) | w1 | w2 | x1 | x2 |
|---|---|---|---|---|---|
| 100.0 | 310.9 | 3.9 x 10-2 | 9.58 x 10-1 | 4.96 x 10-2 | 9.377 x 10-1 |
| 100.0 | 310.9 | 9.1 x 10-2 | 9.00 x 10-1 | 1.19 x 10-1 | 8.512 x 10-1 |
| 100.0 | 310.9 | 1.50 x 10-1 | 8.36 x 10-1 | 1.786 x 10-1 | 7.658 x 10-1 |
| 100.0 | 310.9 | 3.22 x 10-1 | 6.24 x 10-1 | 3.278 x 10-1 | 4.888 x 10-1 |
| 100.0 | 310.9 | 4.21 x 10-1 | 4.91 x 10-1 | 3.854 x 10-1 | 3.458 x 10-1 |
| 100.0 | 310.9 | 8.0 x 10-2 | 9.12 x 10-1 | 9.90 x 10-2 | 8.680 x 10-1 |
| 100.0 | 310.9 | 6.0 x 10-2 | 3 x 10-3 | 1.88 x 10-2 | 7 x 10-4 |
| 100.0 | 310.9 | 7.9 x 10-2 | 6 x 10-3 | 2.52 x 10-2 | 1.5 x 10-3 |
| 100.0 | 310.9 | 1.04 x 10-1 | 7 x 10-3 | 3.38 x 10-2 | 1.8 x 10-3 |
| 100.0 | 310.9 | 1.40 x 10-1 | 1.0 x 10-2 | 4.69 x 10-2 | 2.6 x 10-3 |
| 100.0 | 310.9 | 1.65 x 10-1 | 1.0 x 10-2 | 5.64 x 10-2 | 2.6 x 10-3 |
| 100.0 | 310.9 | 9.0 x 10-2 | 7 x 10-3 | 2.90 x 10-2 | 1.7 x 10-3 |
