Abstract
THE presence in the ether-, chloroform- or light petroleum-soluble portions of extracts from bituminous coals of paraffinic, alicyclic and alkylated aromatic hydrocarbons was demonstrated between 1910 and 19201–5. Pictet and Bouvier first showed the presence of similar compounds in a vacuum tar6, while Jones and Wheeler found the pyridine-soluble, chloroform-soluble extract of a bituminous coal to be the main source of hydrocarbons and resins, the former being characterized as paraffins, olefins and naphthalenes4.
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References
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VAHRMAN, M. Origin of Some Primary Coal Tar Components. Nature 189, 136–137 (1961). https://doi.org/10.1038/189136a0
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DOI: https://doi.org/10.1038/189136a0
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