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Solubility System: Hexacosane with Seawater (Original Report)

Variables:
Temperature: 25°C
Concentration: One salinity: 35 g salts/kg sln
Experimental Remarks:
The solubility of hexacosane in seawater was reported to be 1 × 10-8 g(1)/100 g sln and x1 = 6 × 10-12.
Method/Apparatus/Procedure:

(1) and (2) were placed in a glass stoppered flask fitted with a Teflon stopcock near the bottom. The components were equilibrated by gentle shaking for 12 hrs at 25.0 ± 0.1 °C. The mixture was then allowed to stand for 24 hrs. Samples removed via the stopcock were filtered with suction through 0.45 µm membrane filters to remove any hydrocarbon droplets. The filtrate was extracted three times with hexane and analyzed by gas chromatography.

Source and Purity of Materials:

(1) Analabs, Inc., North Haven, Conn. 99+% pure hydrocarbons.
(2) Seawater collected from 25 m depth in Gulf of Mexico, poisoned with HgCl2 sln to prevent bacterial growth, and filtered through Gelman glass fiber filter. Natural n-alkane levels too low to cause interference

Estimated Errors

Temperature: Eight replications were made. The average of the deviations of the mean gave an experimental error ±16%, yet some accommodation may have occurred due to presence of natural dissolved organic matter.

References:

No references.

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