Forane® 365/227

Forane worker installing insulation

As third generation hydrofluorocarbons, Forane® 365mfc/227ea blends (87/13 and 93/7) are the ideal replacements for R-141b for rigid foam blowing agent needs. Forane® 365mfc/227ea blends have zero ozone depletion potential and boiling point similar to HCFC 141b, thus they can be handled as a true liquid at room temperature. While the straight Forane® 365mfc has a flash point, Arkema offers two different blends that have no flash point and are not subject to flammable liquid regulation.  Available in Europe.  Please contact us about other regions.


CAS number
406-58-6, 431-89-0
Chemical name
1,1,1,3,3-pentafluorobutane, 1,1,1,2,3,3,3-heptafluoropropane
Common name

Geographic availability



  • Air conditioning and refrigeration
    • Refrigeration
  • Automotive and transportation
    • Transportation
  • Building and construction
    • Foam
  • Consumer goods
    • Appliance foam
    • Foam


  • Cooling cases
  • Freezers
  • Phenolic foam
  • Polyisocyanurate boardstock foam
  • Polyurethane foam systems
  • Refrigerators
  • Sprayed polyurethane foam (SPF)
  • Vending machines
  • Wine coolers