2,4-Dimethylpentane

2,4-Dimethylpentane is an alkane with the chemical formula [(H3C)2CH]2CH2. This colorless hydrocarbon is produced in large quantities in oil refineries. It results from the alkylation of isobutane by propylene.[1] Often referred to as "alkylate", it is blended with other gasoline components to give a high octane fuel. Unlike n-heptane, 2,4-dimethylpentane is a desirable fuel because its branched structure allows combustion without knocking.

Typical acid-catalyzed route to dimethylpentane.
2,4-Dimethylpentane
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.003.226
EC Number
  • 203-548-0
UNII
UN number 1206
Properties
C7H16
Molar mass 100.205 g·mol−1
Appearance Colorless liquid
Density 0.6971 g/cm3 (0 °C)
Melting point −119.9 °C (−183.8 °F; 153.2 K)
Boiling point 80.4 °C (176.7 °F; 353.5 K)
Hazards
Main hazards inflammable
GHS pictograms
GHS Signal word Danger
GHS hazard statements
H225, H304, H315, H335, H336, H400, H410
P210, P233, P240, P241, P242, P243, P261, P264, P271, P273, P280, P301+310, P302+352, P303+361+353, P304+340, P312, P321, P331, P332+313, P362, P370+378, P391, P403+233, P403+235, P405
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

References

  1. Bipin V. Vora; Joseph A. Kocal; Paul T. Barger; Robert J. Schmidt; James A. Johnson (2003). "Alkylation". Kirk‐Othmer Encyclopedia of Chemical Technology. doi:10.1002/0471238961.0112112508011313.a01.pub2.
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