Heptane or n-heptane is the straight-chain alkane with the chemical formula H 3 C (CH 2) 5 CH 3 or C 7 H 16. 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).

N-heptane is a clear colorless liquids with a petroleum-like odor. Flash point 25 °F. Less dense than water and insoluble in water. Vapors heavier than air. Heptane is a straight-chain alkane with seven carbon atoms. It has been found in Jeffrey pine (Pinus jeffreyi). It has a role as a non-polar solvent and a plant metabolite.

2022年6月22日 · N-heptane is the purest form of Heptane. Thus, it is used in pharmaceutical industries and certain laboratories that require pure and precise identification of chemical reactions. Like Heptane, it is used as a standard for determining the octane rating for engine fuels.

2024年8月23日 · On the other hand, n-heptane specifically refers to the straight-chain isomer of heptane. It is often used as a reference standard in octane rating, highlighting its importance in assessing the combustion quality of gasoline.

Heptane refers to any of the seven isomers of the compound, while n-heptane specifically refers to the straight-chain isomer. This means that heptane can exist in various forms with different branching patterns, while n-heptane has a linear structure.

Excerpt from NIOSH Pocket Guide for n-Heptane: Eye: IRRIGATE IMMEDIATELY - If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.

Other names: n-Heptane; Dipropylmethane; Heptyl hydride; Skellysolve C; n-C7H16; Eptani; Heptan; Heptanen; Gettysolve-C; NSC 62784 Permanent link for this species. Use this link for bookmarking this species for future reference.

2023年3月24日 · Physicochemical Properties of Heptane. Heptane, also known as n-Heptane, is a straight-chain alkane consisting of seven carbon atoms, with the appearance of a colourless transparent liquid, with an odour similar to that of petroleum; Density 0,68g/cm3; Melting point -91°C; Boiling point 98°C; Flash point -7°C; Vapour pressure 47,4kPa (20 °C ...