ASTM Methods D6729, D6730, and D6733 (Determination of Individual Components in Spark Ignition Engine Fuels) are designed for the determination of the individual hydrocarbons present in spark ignition engine fuels, as well as fuel blends containing oxygenates such as methyl tert-butyl ether, ethyl tert-butyl ether, tert-butanol, ethanol, etc.
Compound, Conc (wt/wt%)
3,3-Diethylpentane, 1.914%
2,3-Dimethylbutane, 2.352%
2,3-Dimethylheptane, 1.16%
2,5-Dimethylheptane, 3.86%
3,3-Dimethylheptane, 1.765%
3,4-Dimethylheptane, 0.839%
3,5-Dimethylheptane, 2.344%
2,2-Dimethylhexane, 0.786%
2,4-Dimethylhexane, 1.454%
2,5-Dimethylhexane, 5.854%
2,2-Dimethyloctane, 2.095%
3,3-Dimethyloctane, 0.804%
2,2-Dimethylpentane, 2.438%
2,3-Dimethylpentane, 4.668%
2,4-Dimethylpentane, 5.931%
3,3-Dimethylpentane, 2.305%
3-Ethylhexane, 0.307%
3-Ethyloctane, 1.068%
3-Ethylpentane, 0.882%
Isopentane, 1.599%
2-Methylheptane, 4.731%
3-Methylheptane, 5.909%
4-Methylheptane, 1.508%
2-Methylhexane, 4.689%
3-Methylhexane, 2.374%
2-Methylnonane, 1.582%
3-Methylnonane, 5.272%
2-Methyloctane, 1.289%
3-Methyloctane, 6.995%
2-Methylpentane, 6.377%
3-Methylpentane, 10.517%
2,2,3-Trimethylbutane, 0.66%
2,2,3-Trimethylpentane, 3.673%
