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N Heptane

CAS # 142-82-5


Heptane is a straight-chain alkane with chemical formula C7H16. It appears as a clear colorless liquid with a petroleum-like odor. It is miscible with alcohol, chloroform, and ether. It is widely used as non- polar solvent.


Density (15°C) (g/cm3)0.685
AppearanceClear and colorless
Water (ppm)44.8
Say bolt Color30
Copper Corrosion 100°C, 2 Hr.1-a
Non-Volatile Matter, mg/100mL0.37
Aromatics (ppm)N.D.
Benzene (ppm)N.D.
Sulfur (ppm)N.D.
Purity (%)99.07
Initial Boiling Point (°C)97.55
Drying Point (°C)97.8
5-95% (°C)0.2


·       Heptane is best recognized as the standard zero-point for the octane rating scale, which is seen on nearly every gasoline pump worldwide.

·       The hydro isomerization of n-heptane to form disbranched and tribranched products useful for producing high octane gasoline. It is used in paints and coatings, GC analysis, HPLC, spectrophotometry and environmental testing.

·       The vulcanization of rubber utilizes heptane as a compounder. In the commercial manufacture of rubber cement, vulcanized rubber is placed in a solvent of 70-90% heptane. Different grades of rubber cement are created depending on a higher or lower percentage of heptane within the solvent.