#high-octane fuel
- Alkylate — The liquid reaction product obtained in the petroleum refining industry through the alkylation process of isobutane with light alkenes (propene, butene); a mixture of branched saturated hydrocarbons with a high octane rating, utilized as a premium component for eco-friendly aviation and automotive gasolines due to its lack of aromatics or sulfur. As an adjective/participle, it describes an organic molecule into which an alkyl radical has been structurally introduced.