isooctane
/ˌaɪsoʊˈɑkteɪn/
noun
- A liquid hydrocarbon compound used as a standard for measuring the octane rating of gasoline, and as a fuel component.
- Chemists use isooctane in laboratories to test the performance of different fuels.
- Gasoline with a high percentage of isooctane resists engine knocking better.
- Isooctane is assigned an octane rating of 100, making it a benchmark for fuel quality.