INVESTIGATION OF THE COMPOSITION OF PETROLEUM ANTHRACENE HYDROCARBONS

The optimum conditions of adduct formation with maleic anhydride for t he isolation of similar to 100% anthracene hydrocarbons from a mixture with phenanthrenes and other compounds are set out. Gas-liquid chroma tography has been used to study the individual composition of anthrace ne and C-1-C-3 anthracenes isolated by the method proposed from concen trates of triaromatic hydrocarbons of crude oils from the Okha, Katang li (Sakhalin) and Dorokhovsk (Urals-Volga) fields. With the aid of the individual compounds synthesized, for the first time 2-ethylanthracen e and 1,3- and 2,3-dimethylanthracene have been identified in crude oi ls, and the retention indices have also been calculated for certain C- 2- and C-3-substituted anthracene hydrocarbons for chromatographic pha se SE-54.