|
Octane - Definition and Overview |
| Related Words: Benzine, Briquette, Butane, Carbon, Charcoal, Coal, Coke, Combustible, Dope, Ethane, Ethanol, Fireball, Firing, Flammable, Fuel, Gas, Gasoline, Heptane, Hexane, Inflammable, Isooctane |
|
|
Octane
| General
|
| Molecular formula
| C8H18
|
| CAS number
| 111-65-9
|
| EC number
| 203-892-1
|
| Annex I Index number
| 601-009-00-8
|
| Physical characteristics
|
| Appearance
| Colourless liquid
|
| Melting point
| -57° Celsius
|
| Boiling point
| 126° Celsius
|
| Vapour density
| -
|
| Vapour pressure
| 11 mm Hg at 20° Celsius
|
| Specific gravity
| 0.703
|
| Flash point
| 15° Celsius (closed cup)
|
| Explosion limits
| 0.96 - 6.5 %
|
| Autoignition temperature
| 220° Celsius
|
| Critical temperature
| 295.7° Celsius
|
Octane is an alkane hydrocarbon with the chemical formula CH3(CH2)6CH3. It has many isomers.
One of the isomers, the iso-octane 2,2,4-trimethylpentane, is of major importance, as it has been selected as the 100 point on the octane rating scale, with n-heptane as the zero point. Octane ratings are ratings used to represent the anti-knock performance of petrol, given as the percentage of 2,2,4-trimethylpentane in an 2,2,4-trimethylpentane / n-heptane mixture that would have the same performance. It is an important constituent of petrol.
See also
External links
|
|
Example Usage of Octane |
 |
mailchimp: Very cool! @MailChimp-sters (on the left) featured in this @nytimes photo taken at Atlanta's @OctaneCoffee [Octane is also a MC customer!] |
 |
coryholland: @mikethemiz I love Octane. Kayla and El covino always play the jams |
 |
keithweaver: RT @toddfs: So this is Octane. Hmm. Intown living/working is nice. Even better when I'm sharing it with the Weaver Brothers > damn right. |
|