Application n-heptane is a typical non-polar solvent, commonly used as a standard for determining octane number, anesthetic, organic synthesis raw materials, etc., in medicine, pesticides, rubber synthesis, chemical fiber synthesis, reagents, electronic cleaning and other industries are also widely used. N-octane is used as a solvent and standard material for chromatographic analysis, and is also used in organic synthesis. With the rapid development of chemical industry, medicine, electronics and other related industries, the demand for n-heptane in our country will increase year by year, especially the high purity n-heptane has broad market prospects. Uses N-heptane is mainly used as a standard for octane number determination, solvent, and for organic synthesis, the preparation of experimental reagents. N-heptane is one of the most widely used hydrocarbon solvents in industry, which is used as extraction solvent for animal and vegetable oils, quick drying rubber adhesive and rubber solvent. It is also used in the manufacture of cosmetics and as a solvent for cleaning coatings, paints, fast drying inks and parts of printing presses. Industrial grade n-heptane is mostly produced by separation of petroleum fractions, and its purity is low.