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Topic summary

Methylcyclopentane

Methylcyclopentane
Names Preferred IUPAC name
Methylcyclopentane
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard100.002.277EC Number
  • 202-503-2
UNII
UN number2298
  • InChI=1S/C6H12/c1-6-4-2-3-5-6/h6H,2-5H2,1H3
  • CC1CCCC1
Properties C6H12Molar mass84.162 g·mol Appearance Colorless liquid Density0.749 g/cm Melting point−142.4 °C (−224.3 °F; 130.8 K) Boiling point71.8 °C (161.2 °F; 344.9 K) Insoluble −70.17·10 cm/mol Hazards Occupational safety and health (OHS/OSH):
Main hazards
flammable Flash point−4 °C (25 °F; 269 K) 260 °C (500 °F; 533 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Methylcyclopentane is an organic compound with the chemical formulaC6H12 or C5H9CH3. It is a colourless, flammable liquid with a faint odor. It is a component of the naphthene fraction of petroleum usually obtained as a mixture with cyclohexane. It is mainly converted in naphthene reformers to benzene.

As of early 1990s, it was present in American and European gasoline in small amounts, and by 2011 its share in US gasoline varied between 1 and 3%. It has a research octane number of 103 and motor octane number of 95.

The C6 core of methylcyclopentane is not perfectly planar and can pucker to alleviate stress in its structure.

Wikipedia source