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Trade Name: Fluorinert Electronic Liquid FCH 720.

Other names: Ethyl nonafluorobutyl ether; PERFLUOROBUTYL ETHYL ETHER.
CAS NO.: 163702-05-4


Ethyl nonafluorobutyl ether FCH720 is a clear, colorless and low-odor fluid. With zero
ozone depletion potential and low global warming potential, it can be used as
replacement of chlorinated materials in many applications.

Fluorinert Electronic Liquid FCH 720

  • Properties

    Average Molecular Weight 264 (g/mol)
    Boiling point
    76.0 (°C)
    Freeze Point
    -138 (°C)
    Vapor Pressure
    109 (mmHg)
    Latent Heat of Vaporization
    (at normal boiling point)
    30 (cal/g)
    Kinematic viscosity
    0.43 (cSt)
    Liquid Specific Heat
    0.29 (cal/g°C)
    Solubility in water
    <20 (ppmw)
    Water solubility
    92 (ppmw)
    Surface Tension
    13.6 (dynes/cm)
    Flash Point None
    Ozone Depletion Potential 0


  • The fully-fluorinated liquid is ideal for use in many heat transfer applications, also widely used in cleaning and lubrication scenarios.

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