SDS Volume (850)
Volume 38. Hydrocarbons in Water and Seawater, Part II, p None
Original Measurements
Paul, M. A.; J. Am. Chem. Soc. 1952, 74, 5274-7.
Variables:
Room Temp:
25
°C
Salinity:
13 - 64 g(3)/kg sln
Prepared by:
Method/Apparatus/Procedure:
Equilibration flask: 50-mL glass-stoppered flask. The flask was heated in a hot-water bath until the hydrocarbon was melted, then shaken vigorously while cooling until excess hydrocarbon had recrystallized. The flask was then placed into a water bath thermostatically controlled at 25.00 ± 0.05 °C for at least 48 hr, and shaken occasionally during that time. Samples were withdrawn with a 10-mL transfer pipet, diluted appropriately and analyzed using a spectrophotometer in the ultra-violet region of the spectrum.
Source and Purity of Materials:
- recrystallized from methanol (source not specified)
- reagent grade, dried at 120°C before weighing (source not specified)
- redistilled. (source not specified)
Estimated Errors:
Ambient temperature: ±0.05°C
Mass concentration (m/v) (1): ±2.6%
References
1 Weast, R. C.; CRC Handbook of Chemistry and Physics, 59th Edition; CRC Press, 1978, pp D299-D300.
Components:
- Biphenyl, $\ce{ C12H10 }$; [92-52-4] NIST WebBook
- Sodium chloride, $\ce{ NaCl }$; [7647-14-5] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| $T$ (°C) | $x_{1}$ | MR1 (g1/100 g2) | MR2 (g/kg) | $C_{1}$ (mol/L) | $C_{2}$ (mol/L) |
|---|---|---|---|---|---|
| 25 | 7.16 x 10-7 | 6.08 x 10-4 | 13.25 | 3.98 x 10-5 | 0.229 |
| 25 | 6.49 x 10-7 | 5.46 x 10-4 | 26.24 | 3.61 x 10-5 | 0.458 |
| 25 | 5.55 x 10-7 | 4.62 x 10-4 | 39.05 | 3.08 x 10-5 | 0.687 |
| 25 | 5.02 x 10-7 | 4.16 x 10-4 | 46.28 | 2.79 x 10-5 | 0.818 |
| 25 | 5.01 x 10-7 | 4.13 x 10-4 | 51.62 | 2.78 x 10-5 | 0.916 |
| 25 | 4.32 x 10-7 | 3.54 x 10-4 | 63.97 | 2.40 x 10-5 | 1.145 |
| 25 | 4.21 x 10-7 | 3.45 x 10-4 | 63.97 | 2.34 x 10-5 | 1.145 |
(a) Calculated by compilers using density and other physical data for NaCl solutions from ref 1.
