Abstract
The gelchromatographic fractionation was carried out for two fractions (Ca. 0.59% coal) which were distillated from the n-hexane soluble portion of γ-fraction obtained from Oyubari coal (85.9%C) under reduced pressure and whose mean molecular weight were 185 and 225.
The measurement of ultimate analyses, IR-, UV-and NMR-spectra were made for respective fractions separated from the distillates by the gelchromatograph.
It was found that the earlier fractions were the mixture of n-paraffines whose mean number of carbon were 13 or 16 and the later fractions were more rich in aromatic hydrocarbons whose aromatic nucleus was supposed to be two or three condensed aromatic rings. Some of aromatic nucleus were inferred to be condensed with naphthenic ring.
