2,2,4-Trimethylpentane

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2,2,4-Trimethylpentane
Skeletal formula of 2,2,4-trimethylpentane
2,2,4-Trimethylpentane
Names
IUPAC name
2,2,4-Trimethylpentane
Other names
Isooctane
Identifiers
3D model (JSmol)
ECHA InfoCard 100.007.964
RTECS number SA3320000
Properties
C8H18
Molar mass 114.23 g·mol−1
Appearance colorless liquid
Density 688 kg/m3, liquid
Melting point −107.38 °C (−161.28 °F; 165.77 K)
Boiling point 99.3 °C (210.7 °F; 372.4 K)
Immiscible
Thermochemistry
328 J·K−1·mol−1
−259 kJ/mol
−5461 kJ/mol
Hazards
Flammable (F)
Harmful (Xn)
Dangerous for
the environment (N)
R-phrases (outdated) R11 R38 R50/53 R65 R67
S-phrases (outdated) (S2) S9 S16 S29 S33 S60 S61 S62
Flash point 4.5 °C
Explosive limits 1.1–6.0%
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

2,2,4-Trimethylpentane, also known as isooctane or iso-octane, is an octane isomer which defines the 100 point on the octane rating scale (the zero point is n-heptane). It is an important component of gasoline.

Isooctane is produced on a massive scale in the petroleum industry, usually as a mixture with related hydrocarbons. The alkylation process alkylates isobutane with isobutylene using a strong acid catalyst. In the NExOCTANE process, isobutylene is dimerized into isooctene and then hydrogenated to isooctane.[1]

See also

References

External links