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Corporate Address
P.O. Box 759
Hopkinton, MA 01748
Tel. 508-435-7700
Fax. 508-625-1368
Plant Address
3266 Bergey Road
Hatfield PA 19440
Tel. 215-443-9600
Fax. 215-443-2665

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COVID-19 Updates


  • Brochure
    Specialty Gases. Rare Gases. Fluorocarbons.
  • CH3F Methyl Fluoride Brochure
    Fluorocarbons impact the environment by contributing to global warming. EFC continues to innovate lower GWP chemistries for semiconductor device manufacturing and to protect our environment.


  • Difluoromethane – CH2F2
    Halocarbon 32 (Difluoromethane)(CH2F2) is a colorless, flammable gas with a slight ether-like odor. Halocarbon 32 is shipped as a liquefied gas under its own vapor pressure (207 psig @ 70¡F).