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Pentafluoroethane, also called simply pentafluoroethane, HFC-125, or R-125, is a refrigerant that has zero ozone depletion potential. It has the formula CF3CHF2.

HFC-125 suppresses fire by absorbing heat energy at its molecular level faster than the heat can be generated, so the fire cannot sustain itself. It also forms free radicals to chemically interfere with the chain reaction of the combustion process. This makes it a highly effective fire fighting agent that is safe for people and causes no damage to equipment.

HFC-125 (pentafluoroethane)
Ecological properties
Pentafluoroethane degrades in the atmosphere to CO2 and HF by reaction with naturally occurring hydroxyl radicals.
The atmospheric lifetime is estimated to be 40.7 years.

HFC 125 (Pentafluoroethane)

HFC-23
- by-product in production of HCFC-22
- low temperature refrigerant
- firefighting agent

HFC-32
blend component for airconditioning equipment and commercial refrigeration

HFC-43-10mee
solvent for specialized applications

HFC-143a
blend component for air conditioning equipment and commercial refrigeration

HFC-152a
- propellant for specialised industrial aerosols
- blowing agent component for extruded polystyrene foams (XPSS)

NAF S 125 (HFC 125) fire suppression system Back Top

NAF S 125 is a blend of HFC 125 and a patented detoxifying additive that reduces the amount of decomposition by-products. It is an extinguishing agent (EX 5694) recognized by Underwriter’s Laboratory (UL) and listed under SNAP list of the United States Environmental Protection Agency (EPA) for normally occupied spaces.

HFC-365mfc
- foam blowing agent for polyurethane (PUR) and phenolic foams.
- blend component for solvents

The typical design concentration of the LPG systems for the NAF S125® is 8%, with a discharge time of 10 seconds in accordance with the UL 2166 regulations .

HFC-125 (pentafluoroethane)
In limited metabolic studies in vivo in the rat, the metabolism of pentafluoroethane was negligible.Toxicokinetic studies are in progress.

There are no reported effects of pentafluoroethane in man.

An occupational exposure limit (8-hour time weighted average) of 1,000 ppm (4,910 mg/m3) is recommended by producers.

Fire Links
www.nfpa.org - National Fire Prevention Association (NFPA)
www.nafed.org - National Association of Fire Equipment Distributors (NAFED)
www.arffwg.org - Aircraft Rescue & Fire Fighting Group ARFF)
www.fssa.net - Fire Suppression Systems Association (FSSA)
www.harc.org - Halon Alternatives Research Corporation (HARC)
www.nist.gov - National Institute of Standards & Technology (NIST)
www.esd.worldbank.org/mp - Montreal Protocal

Product range:
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