Websites and locations
  • Product

Forane® 141b

Discover the Product range Forane® foams, solvents and aerosols.
Product overview

Forane® 141b is a liquid blowing agent ideal for spray foam applications. Since it is a liquid at atmospheric conditions and has low vapor thermal conductivity, which allow the production of polyurethane foam with excellent physical properties. The low vapor thermal conductivity of Forane® 141b makes it ideal for the appliance market. Forane® 141b is an ideal blowing agent for polyurethane core metal-faced panels used for construction.  R-141b is an HCFC and, as an ozone-depleting substance, is subject to phase out according to the Montreal Protocol international treaty and the Clean Air Act in the United States; it has been phased out in the United States for use in foam.

Geographic availability
  • Asia Pacific
  • Latin America and the Caribbean
  • Northern America

Chemical name : 1,1-Dichloro-1-fluoroethane

Common name : R-141b


  • R-value (initial): 8.7

  • Thermal conductivity @75ºF (Btu-in/ft2 hr ºF): 0.115

  • Thermal conductivity @50ºF (Btu-in/ft2 hr ºF): 0.11

  • Parallel compressive strength (psi): 45

  • Perpendicular compressive strength (psi): 22

Related products

Forane® 134a blowing agent
  • Product

Forane® 134a is a gaseous, non-ozone depleting blowing agent that can be used for foam applications, including residential ...

Forane® 365/227
  • Product

As third generation hydrofluorocarbons, Forane® 365mfc/227ea blends (87/13 and 93/7) are the ideal replacements for R-141b ...

Forane® FBA 1233zd foam blowing agent
  • Product

Forane® FBA 1233zd is a high performance, low global warming potential (GWP) liquid blowing agent that is SNAP approved for most ...

  • Product

Transcend® additive technology offers a unique approach to improving next-generation foam technologies; it goes beyond a single ...