A colorless, volatile hydrocarbon liquid containing seven carbon atoms, used as a solvent and in gasoline.
From Greek 'hepta' (seven) + chemical suffix '-ane' (alkane). Systematically named based on the number of carbons in its chain.
Heptane is used in laboratories to test soil contamination and in gasoline formulations, but it's also the hydrocarbon that chemists use as their standard reference—it's literally the baseline for measuring how pure other hydrocarbons are.
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