FM 200

FM 200

FM-200 Suppression Systems

Historically, the most widely used Halon 1301 replacement, FM-200™ provides waterless fire suppression without leaving behind residue or particulate, and has been installed in over one hundred thousand applications in more than 70 nations.

  • Safe for human occupancy.
  • Zero Ozone Depletion Potential (ODP)
  • Discharges in 10 seconds or less to extinguish fires rapidly, minimizing damage to high-value assets.
  • App ears on US Environmental Protection Agency (EPA) Significant New Alternatives Policy (SNAP) list
  • Designed in accordance with NFPA 2001.
  • UL listed and FM approved.
  • Marine system with USCG and ABS approvals also available.

WHAT IS FM-200™?

FM-200™ (HFC-227ea) is formed from the elements carbon, fluorine and hydrogen (CF3CHFCF3-heptafluoropropane). The primary extinguishing mechanism of FM-200™ is heat absorption, with a secondary chemical contribution from the thermal decomposition of FM-200™ in the flame.

FM-200™ fire suppressant (HFC-227ea) can be safely used where people are present.

When used at standard design concentrations, it is safe for occupied spaces. FM-200™ leaves no residue. Most common metals, such as aluminum, brass, steel, cast iron, lead, stainless steel, and copper, as well as rubber, plastic, and electronic components, are unaffected when exposed to FM-200™ (HFC-227ea)











Chemical Name

Heptafluoropropane (CF3CHFCF3)

Molecular Weight


Boiling Point @ 760 mm Hg

3.9°F (-15.6°C)

Freezing Point

-204°F (-131.1°C)

Critical Temperature

215°F (101.7°C)

Critical Pressure (psia)

422 psia (2912 kPa)

Critical Volume (ft3/lbm) (cc/mole)

0.0258 (274)

Critical Density (lbm/ft3)

38.8 (621 kg/m3)

Specific Heat, Liquid (BTU/lb-F°) @ 77°F (25°C)

0.283 (1.184 kj/kg/°C)

Specific Heat, Vapor (BTU/lb-°F) @ constant pressure of 1 ATM @ 77l F (25l c)

0.1932 (0.808 kj/kg/°C)

Heat of Vaporization (BTU/lb) at Boiling Point

57.0 (132.6 kj/kg)

Thermal Conductivity (BTU/h ft°F) of Liquid @ 77°F (25°C)

0.040 (0.069 w/m°C)

Viscosity, Liquid (lb/ft/hr) @ 77°F (24°C)

0.443 (0.184 centipoise)

Vapor Pressure (psia) @ 77°F (25°C)

66.4 (457.7 kPa)

Ozone Depletion Potential


Estimated Atmospheric Lifetime (years)

31 - 41

LC50 (Rats; 4hrs - ppm)