1. Used as a low boiling point solvent, plastic industrial blowing agent, but also with 2-methylbutane used as car and aircraft fuel, manufacturing artificial ice, anesthetics, synthesis of amyl alcohol, isopentane, etc.

2. Gas chromatography analysis standard. It is used in the manufacture of anesthetic, solvent, cryogenic thermometer and artificial ice, amyl alcohol, isopentane, etc.

3. Used for preparing standard gas, correcting gas and used as molecular sieve desorption agent.

4. Used as solvent, gas chromatography reference liquid and anesthetic. It is also used for organic synthesis and manufacture of cryogenic thermometers.

5. Used as solvent to make artificial ice, anesthetic, synthesis of amyl alcohol, isopentane, etc.