iso-octane

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iso-octane

A paraffin hydrocarbon fuel, defined as 2,2,4-trimethylpentane, which is used as a standard in the rating of fuels. This knock quality of fuel is expressed as a percentage by volume of iso-octane in a mixture with normal heptane that has the same knocking characteristics as the fuel under question. Fuel with an 87 octane rating is equivalent to a mixture of 87% iso-octane and 13% heptane.
References in periodicals archive ?
Correlation analysis showed that some compounds derived from smoking (especially, pyridine, furfural, 2-methyl-2-cyclopenten-1-one, 2,3-dimethyl-2-cyclopenten-1-one, and guaiacol) were positively correlated with the intensity of cured meat odour and flavour and negatively with the intensity of dried meat odour and flavour, while 2,2,4-trimethylpentane had a positive effect on the intensity of dried meat odour and flavour.
These include the following SRMs: SRM 1493 (PCBs in 2,2,4-Trimethylpentane) [27], SRM 2262 (Chlorinated Biphenyl Congeners in 2,2,4-Trimethylpentane, Nominal Concentration 2 [micro]g [mL.
28] Certificate of Analysis, SRM 2262, Chlorinated Biphenyl Congeners in 2,2,4-Trimethylpentane (Nominal Concentration 2 microgram/milliliter), Certificate of Analysis, National Institute of Standards and Technology, Gaithersburg, MD (1995), www.
SBR shows good solubility potential with both 2,2,4-trimethylpentane and iso-octene compared to the baseline fuels, but high solubility is expected with sabinene and the two aromatics.
For silicone, both 2,2,4-trimethylpentane and iso-octene produce high solubility potentials at high blend levels, which is interesting since the solubility of silicone is usually highest for the baseline fuel.
15] Palette compound FGF-LLNL FGG-LLNL n-Butane 0 0 2-Methyl butane 0 0 2-Methyl hexane 0 0 Cyclopentane 14 14 1,2,4-T rimethy lbenzene 0 31 1-Hexene 14 9 n-Heptane 7 8 2,2,4-Trimethylpentane 53 38 Toluene 12 0 Table 6.