Method for removing polyhalogenated hydrocarbons from nonpolar o

Mineral oils: processes and products – Refining – Halogen contaminant removal

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570204, C10G 2904

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active

044104227

ABSTRACT:
A method is provided for reducing the level of polychlorinated aromatic hydrocarbons, "PCB's", while dissolved in an organic solvent, for example, transformer oil. Removal of polychlorinated aromatic hydrocarbon from the contaminated organic solvent can be accomplished by treating the contaminated solution with a mixture of alkali mercaptide in the presence of a phase transfer catalyst.

REFERENCES:
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"Nucleophilic Aromatic Substitution Reactions of Unactivated Aryl Halides with Thiolate Ions in Hexamethylphosphoramide", Cogolli et al., J. Org. Chem., vol. 44, No. 15, pp. 2642-2646, (1979).
"Reactions of Polychlorobenzenes with Alkanethiol Anions in HMPA, A Simple, High-Yield Synthesis of Poly(alkylthio)benzenes", Testaferri et al., J. Org. Chem., 45, pp. 4376-4380, (1980).
Hutzinger et al., The Chemistry of PCB's, CRC Press, Inc., Boca Raton, Fla.
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