Skip to content
Close

Cyclopentane

      Cyclopentane is the first ring-shaped, naturally occurring hydrocarbon. It is present in very small quantities in crude oil, the most common source being naphtha from crackers. The chemical formula for this cycloalkane, or naphthene, is C5H10


      Physical Parameter

      Parameter

      Unit

       

      CAS Number

       

      287-92-3

      EC Number

       

      206-016-6

      Customs tariff number

       

      29021900

      Molar mass

      g/mol

      70.1

      State at ambient temperature

       

      liquid colourless

      Odour

       

      gasoline

      Density

      g/cm3 (15 °C)

      0.75

      Melting Point

      °C

      -94

      Boiling Point

      °C

      49

      Flash Point

      °C

      -51

      Vapour Pressure

      kPa (20 °C)

      34.6

      Refractive index

       

      1.4065


      Cyclopentane is almost insoluble in water, but shows very good solubility or unlimited miscibility with many organic solvents such as other paraffins, ethers, esters, white spirit, benzene or chlorinated hydrocarbons. 

       

      Application

      Like all cyclic alkanes (naphthenes, saturated hydrocarbons), Cyclopentane is a very good solvent for non-polar substances, fats and oils. However, the value of cyclopentane lies in another application. Its unique structure, combined with a relatively low boiling point, make it a preferred molecule for the manufacture of polyurethane insulation board. Cyclopentane not only foams the material, but some of it remains in the foam cells, and its special physical properties contribute to an even better insulating effect. 

      For this reason, it is used not only in the construction industry for insulating house facades, but also in the manufacture of particularly efficient refrigerators, freezers, cold stores and trucks for transporting frozen or very temperature-sensitive goods. 

      Very rarely Cyclopentane is used as a solvent or as a basic building block in fine chemicals.

      • Blowing agent for polyurethane foams
      • Insulating boards for building insulation
      • Refrigerators, freezers
      • Refrigeration logistics
      • Solvents
      • Fine chemicals


      Synonyms: Cyclopentane, Pentane, Cyclic pentane, Pentamethylene

      Back to Product Search

      Topics: Insulation Industry, Construction Industry, Food Industry, Fine Chemistry, Chemical Industry, Cooling Industry, Pentane (C5)