Compilation - Octane with Water (IUPAC SDS Volume 38)
SDS Volume (658)
Volume 38. Hydrocarbons in Water and Seawater, Part II, p None
Original Measurements
Jonsson, J. A.; Vejrosta, J.; Novak, J.; Fluid Phase Equilib. 1982, 9, 279-86.
Variables:
Room Temp: 15 -35 °C
Prepared by:
Method/Apparatus/Procedure:
Air-water partition coefficients were measured by saturating a portion of water by a stream of nitrogen containing a known vapour concentration of (1). After equilibration, the dissolved (1) was adsorbed in a porous polymer trap and the entrapped (1) analyzed by gas chromatography. The method and apparatus are described in detail in [1].
Source and Purity of Materials:
- Fluka, >99.8%, used as received.
- not specified.
Estimated Errors:
Ambient temperature: Not specified.
References
1 Vejrosta, J.; Novak, J.; Jonsson, J. A.; Fluid Phase Equil. 1982, 8, 25-35.
Components:
- Octane, $\ce{ C8H18 }$; [111-65-9] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Solubility values were calculated by the authors from their smoothed air-water partition coefficient (KAW) by assuming KAW values obtained at infinite dilution were valid at the saturatioin pressure of (1).
Solubility of octane in water
| $T$ (°C) | MR1 (mg/kg) | $x_{1}$ | MR1 (g1/100 g sln) |
|---|---|---|---|
| 15 | 0.653 | 1.03 x 10-7 | 6.53 x 10-5 |
| 20 | 0.628 | 9.9 x 10-8 | 6.28 x 10-5 |
| 25 | 0.615 | 9.7 x 10-8 | 6.15 x 10-5 |
| 30 | 0.612 | 9.6 x 10-8 | 6.12 x 10-5 |
| 35 | 0.620 | 9.8 x 10-8 | 6.20 x 10-5 |
(a) These values were calculated by the compiler.
