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a liquid alkane hydrocarbon found in petroleum and existing in 18 isomeric forms, esp the isomer n-octane. Formula: C8H18



n-octane, a saturated hydrocarbon, C6H18; a colorless liquid with a characteristic odor. Melting point, –56.8°C; boiling point, 125.67°C; density, 0.7025 g/cm3 at 20°C; octane number, 17–19. Along with isooctane and other isomers, octane is found in petroleum and straight-run gasoline (up to 10 percent); large quantities of octane are present in synthetic gasoline prepared from CO and H2.

Octane is extracted commercially by rectification, then refined with urea or by means of molecular sieves. At 500°C and a pressure of 1–2 meganewtons per sq m, or 10–20 kilograms-force per sq cm, octane converts into a mixture of aromatic hydrocarbons (o-xylene and ethylbenzene) when passed over an aluminum-molybdenum or aluminum-chromium catalyst in the presence of hydrogen. This dehydrocyclization reaction is one of the main processes used in catalytic reforming.

References in periodicals archive ?
SGI's Octane III offers a solution for workstation users wanting to reach dramatically higher levels of performance with minimal investment.
However, when dealing with a three-phase system (gaseous ozone is the third one), it is also necessary to know the solubility of ozone in two-phase mixtures, such as 50% of octane and 50% of water.
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Octane Online is available immediately through a subscription-based pricing model with a one-time set-up fee and a monthly service fee.
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Octane Version 4 is the only platform that provides a full view into all data assets.
Recently, the local court approved Octane's motion to attorney's fees under the Patent Act based on the new standard announced by the Supreme Court in the Octane Fitness v.
Summary: A Minnesota district court is moving forward on awarding payment of attorney’s fees and costs to counsel for Octane Fitness, given the Supreme Court’s decision .
Recently we have upgraded our hardware and software to take that passion to the next level with Cubix and Octane Render.
Youssef said that the 5,000 tons in the consumption rate for octane-95 during FY 2013/2014 was used by cars belonging to the presidency, cabinet, and embassies, whereas others who were using octane-95 moved over to octane-92 with octane booster added.
Gasoline rated at 98 Octane is now priced at LL34,800 per 20 liters and gasoline rated at 95 octane is priced LL34,100 per 20 liters