Accession Number:

AD0262439

Title:

SOLUBILIZATION OF METHANOL BY SOAP MICELLES IN TOLUENE AS MEASURED BY GAS CHROMATOGRAPHY

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

Report Date:

1961-07-26

Pagination or Media Count:

11.0

Abstract:

Gas-liquid chromatography was used to analyze equilibrium vapors over toluene solutions of sodium and magnesium dinonylnaphthalene sulfonates and magnesium phenylstearate containing total concentrations of methanol ranging from 0.2 to 2.6 wt-. Resulting data were used to derive the extent of solubilization of methanol by these oil-soluble s aps. Within the region investigated, as many as five moles of methanol were solubilized per equivalent of soap. The degree of solubilization with respect to the concentration of available solubilizate was a function of the cation and its tendency to coordinate, as well as of the anion of the soap. The addition of water to a system containing 2.3 of methanol increased the proportion of methanol solubilized. Infrared data indicated that hydrogen bonding is an important influence in the solubilization process. Fluorescence depolarization data suggest a decrease in micelle size with increasing solubilization of methanol. Special precautions were required to minimize interferences and disturbances to the chromatographic observations arising from RF sources, unstable carrier-gas flow rates and pressures, and sampling valve contamination. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE