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 properties

        Molar mass

        g/mol

        70.1

        State at ambient temperature

         

        liquid colourless

        Odour

         

        gasoline

        CAS-Number

         

        287-92-3

        EC-Number

         

        206-016-6

        Customs tariff number

         

        29021900

        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

        Topics: Pentan (C5), Construction industry, Refrigerator industry, Food industry, Fine chemistry, Cooling logistics