FM-200/HFC-227ea is an odourless, colourless, liquefied compressed gas. It is stored as a liquid and dispensed into the hazard as a colourless, electrically nonconductive vapour that is clear and does not obscure vision.
It leaves no residue and has acceptable toxicity for use in occupied spaces at design concentration.
FM-200/HFC-227ea extinguishes a fire by a combination of chemical and physical mechanisms.
FM-200/HFC-227ea’s mechanism of extinguishing fires is considered active. Its primary action is through physically cooling the fire at the molecular level.
FM-200/HFC-227ea belongs to the same class of agents used in the refrigeration industry; therefore, it is an efficient heat transfer agent.
FM-200/HFC-227ea removes the thermal energy from the fire to the extent where the combustion reaction cannot sustain itself.