SDS Volume (3271)
Volume 67. Halogenated Ethanes and Ethenes with Water, p 577
Original Measurements
Newsham, D. M. T.; Measurement and Correlation of Thermodynamic Data for Chlorinated Hydrocarbons, UMIST, Manchester (January. 1981).
Variables:
Room Temp: 298 - 323 $\pu{K}$
Prepared by:
Method/Apparatus/Procedure:
Samples were equilibrated for at least ten days in a water thermostat. Water analysis was done using an automatic Karl Fischer titration apparatus. The instrument accuracy was specified to be 1 %. All samples were handled with a hypodermic syringe which was weighted before and after each addition. The instrument was calibrated using a synthetic mixture of 1 % water in methanol.
Source and Purity of Materials:
- Distilled (compiler).
- Source and purity not given.
- Source not given, contained less than 0.1% dissolved material.
Estimated Errors:
Ambient temperature: ±0.1 K.
Mass concentration (m/v) (1): ±1%.
Components:
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
- Calcium chloride, $\ce{ CaCl2 }$; [10043-52-4] NIST WebBook
- 1,1-Dichloroethane, $\ce{ C2H4C12 }$; [75-34-3] NIST WebBook
Experimental Data
a1=water activity (=p1/p°).
p1=partial pressure of water in solution.
p°=vapor pressure of pure water.
| $T$ (°C) | $P$ (mm Hg) | 100w2 | $x_{1}$ | α1 |
|---|---|---|---|---|
| 25 | 6.65 | 45.54 | 1.96 x 10-3 | 0.280 |
| 50 | 30.5 | 45.54 | 3.65 x 10-3 | 0.330 |
| 25 | 9.48 | 39.69 | 2.42 x 10-3 | 0.399 |
| 50 | 40.1 | 39.69 | 4.85 x 10-3 | 0.434 |
| 25 | 11.83 | 35.77 | 2.91 x 10-3 | 0.498 |
| 50 | 48.3 | 35.77 | 5.84 x 10-3 | 0.522 |
| 25 | 14.18 | 31.86 | 3.54 x 10-3 | 0.597 |
| 25 | 16.63 | 27.44 | 4.11 x 10-3 | 0.700 |
| 50 | 65.7 | 27.44 | 7.70 x 10-3 | 0.710 |
| 25 | 20.19 | 18.96 | 4.74 x 10-3 | 0.850 |
| 50 | 78.6 | 18.96 | 9.15 x 10-3 | 0.850 |
| 25 | 23.76 | 0.0 | 5.30 x 10-3 | 1.000 |
| 50 | 92.51 | 0.0 | 0.01067 | 1.000 |
