| 2,2,4-Trimethylpentane |
| Image:2,2,4-Trimethylpentane.svg |
| Image:Isooctane-3D-balls.png |
| IUPAC name |
2,2,4-Trimethylpentane |
| Other names |
Isooctane |
| Identifiers |
| CAS number |
[540-84-1] |
| RTECS number |
SA3320000 |
| SMILES |
CC(C)(C)CC(C)C |
| Properties |
| Molecular formula |
C8H18 |
| Molar mass |
114.22 g/mol |
| Appearance |
colorless liquid |
| Density |
0.688 g/ml, liquid |
| Melting point |
−107.38 °C (165.77 K)
|
| Boiling point |
99.3 °C (372.4 K)
|
| Solubility in water |
Immiscible |
| Thermochemistry |
Std enthalpy of
formation ΔfHo298 |
−259 kJ/mol |
Std enthalpy of
combustion ΔcHo298 |
−5461 kJ/mol |
Standard molar
entropy So298 |
328 J·K−1·mol−1 |
| Hazards |
| MSDS |
MSDS |
| EU classification |
Flammable (F)
Harmful (Xn)
Dangerous for
the environment (N) |
| R-phrases |
R11, R38, R50/53,
R65, R67 |
| S-phrases |
(S2), S9, S16, S29, S33,
S60, S61, S62 |
| Flash point |
4.5 °C |
Autoignition
temperature |
417 °C |
| Explosive limits |
1.1–6.0% |
| Related compounds |
| Related alkanes |
Heptane
Octane |
| Related compounds |
Hexadecane |
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references |
2,2,4-Trimethylpentane, also known as isooctane, is an octane isomer which defines the 100 point on the octane rating scale. 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 an strong acid catalyst. In the NExOCTANE process[1], isobutylene is dimerized into isooctene and then hydrogenated to isooctane.
See also
References
- ^ NExOCTANE™ - Neste Jacobs
External links
da:Isooktan
de:2,2,4-Trimethylpentan es:2,2,4-Trimetilpentano fr:Isooctane it:Isoottano ja:イソオクタン pl:2,2,4-trimetylopentan ru:Изооктан fi:2,2,4-trimetyylipentaani vi:2,2,4-Trimêtylpentan
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