Naphtha, shale oil, hydrocracked, solvent refined heavy.

Naphtha, shale oil, hydrocracked, solvent refined heavy. is a complex combination of hydrocarbons obtained as the raffinate from solvent extraction of hydrocracked shale oil. It consists of aliphatic hydrocarbons having carbon numbers predominantly in the range of C7 through C12 and boiling in the range of approximately 90.degree.C to 230.degree.C (194.degree.F to 446.degree.F).