SDS Volume (3771)

Volume 69. Ternary Alcohol-Hydrocarbon-Water Systems, p None

Original Measurements

Letcher, T. M.; Siswana, P. M.; Fluid Phase Equilib. 74, 203 (1992).

Variables:

Room Temp: 298 $\pu{K}$

Prepared by:

A. Skrzecz

Method/Apparatus/Procedure:

The points on the binodal curve were determined by the formation of a cloudy mixture on shaking after the addition of a known mass of one component to a mixture of known masses of the other two components. Precision weighing syringes were used as described by the refractive index method reported in [2] and a complementary method using the Karl Fischer titrations as reported in [3].

Source and Purity of Materials:
  1. Merck, AR grade; distilled, dried by the addition of anhydrous potassium carbonate, distilled; purity better than $\pu{99.6 mole%}$ by GLC.
  2. BDH; used as received; purity better than $\pu{99.6 mole%}$ by GLC.
  3. Source not specified.
Estimated Errors:

Ambient temperature: Estimated comp. 0.005 mole fraction on the binodal curve and 0.01 mole fraction for tie lines (estimated by the authors).
Mass concentration (m/v) (1): Not reported.

References

1 Letcher, T. M.; Wootton, S.; Shuttleworth, B.; Heyward, C.; J. Chem. Thermodyn 18, 1037 (1986).
2 Briggs; S. W.; Comings, E. W.; Ind. Eng. Chem. 35, 411 (1943).
3 Letcher, T. M.; Siswana, P. M.; van der Watt, P.; Radloff, S.; J. Chem. Thermodyn. 21, 1053 (1989).

Components:
  1. 2-Methyl-2-propanol, $\ce{ C4H10O }$; [75-65-0] NIST WebBook
  2. 1-Heptene, $\ce{ C7H14 }$; [592-76-7] NIST WebBook
  3. Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Compositions along the saturation curve
$T$ (°C) $T$ ($\pu{K}$) $x_{1}$ $x_{2}$ w1 w2
25.0298.2 0.0000.000 0.00.000
25.0298.2 0.0572 x 10-3 0.1989 x 10-3
25.0298.2 0.1380.010 0.3860.035
25.0298.2 0.1910.021 0.4670.064
25.0298.2 0.2570.038 0.5400.099
25.0298.2 0.3070.062 0.5710.143
25.0298.2 0.3750.129 0.5720.244
25.0298.2 0.4110.205 0.5410.336
25.0298.2 0.3910.319 0.4560.462
25.0298.2 0.3630.438 0.3800.570
25.0298.2 0.3050.573 0.2910.680
25.0298.2 0.2200.707 0.1970.787
25.0298.2 0.1160.855 0.0980.896
25.0298.2 0.0600.928 0.0490.948

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