Distillates (petroleum), thermal cracked naphtha and gas oil, extractive; Low boiling point thermally cracked naphtha (A complex combination of hydrocarbons produced by the extractive distillation of thermal cracked naphtha and/or gas oil. It consists of paraffinic and olefinic hydro­carbons predominantly isoamylenes such as 2-methyl-1- butene and 2-methyl-2-butene and boiling in the range of approximately 31 °C to 40 °C.)