HeptaneHeptane or n-heptane is the straight-chain alkane with the chemical formula H3C(CH2)5CH3 or C7H16. When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane). Read from the Chembox of the Wikipedia article Heptane, revision 1380053473.

Property

Value

Formula

C7H16, 100.20 g/mol

Melting point

-90.55 °C

Boiling point

98.38 °C

Density

0.68 g/cm³

Flash point

-4 °C

log P, measured

4.66

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