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heptane

heptane

1 9.7
Clear, very flammable liquid from oil that dissolves things and helps test gasoline strength
  • noun
  • /ˈhɛpˌteɪn/
  • Specialized
translation icon : heptano
  • At three minutes into the experiment, technicians ignite the seat with a 12-inch pan of heptane.

Examples

  • This same approach was not able to suppress a small heptane pool flame.

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  • The fuel rating for this gasoline is determined by comparing its performance to that of heptane.

  • Centered on that trickle of extra heptane, the flame shrunk and assumed its blue top shape.

Synonyms

octane
vsheptane
  • Specialized
19 5.8

A part of gasoline that helps prevent the engine from knocking

is used as the standard reference to determine that fuel rating
xylene
vsheptane
  • Specialized
3 9.9

A clear liquid that can catch fire and is used to dissolve paints and glue

is used as a solvent mainly to judge fuel quality rather than industrial uses
hexane
vsheptane
  • Specialized
1 8.5

A clear, very easy to burn liquid from oil used to dissolve oils and other materials in factories and labs

is used as a solvent but specifically in fuel rating tests
pentane
vsheptane
  • Specialized
8.1

A colorless liquid that burns easily and is used to dissolve substances and to make fuels and plastics

is used as a solvent and specifically to determine fuel ratings
isopentane
vsheptane
  • Specialized
8.6

A colorless, flammable liquid used to cool things and as a solvent

is used as a solvent mainly to determine fuel ratings rather than for cooling

Surface Forms

heptane singular
heptanes plural

Morphology

heptane = hept + ane

Formed from the Greek combining form 'hept-' (seven) + the specialised chemical suffix '-ane'; this nomenclature is domain-specific and not transparently meaningful to an average B1 learner.

Etymology

Heptane comes from the Greek part hepta meaning 'seven' and the chemical ending -ane, because the molecule has seven carbon atoms. So the name tells you how many carbons it has, which helps chemists understand its properties.