NAF® Fire Extinguishing Agents
NAF® S 227 is a UL Recognized and US EPA SNAP Listed gaseous extinguishing agent. NAF® S 227 Engineered Systems are UL Listed.
NAF® S 227 is suitable for use in rooms, vaults, enclosed machines, containers, storage areas and wherever fixed enclosures are present. It is an electrically non-conductive media, it can therefore be used to protect electronic and delicate equipment. After discharge NAF® S 227 does not require the clean-up of the protected enclosure, making it extremely useful in applications where damages by other extinguishing methods would be prohibitive.
NAF® S 227 has a low order of toxicity. At typical design concentrations it can be safely used to protect normally occupied areas.
Its formulation includes a patented additive that reduces the levels of decomposition by-products normally generated by halocarbons during extinguishment and enhances extinguishing performance (inter alia US Patent No. 6,402,975 and EU Patent No. 630,278).
Physical Properties
| Composition | HFC-227ea + 0.15% of Limonene |
| Molecular weight | 170.0 |
| Boiling point @ 1.013 bar | -16.4°C |
| Density of the liquid @ 25°C | 1407 kg/m³ |
| Critical temperature | 374.85 K |
| Critical pressure | 2912 kPa |
| Vapor pressure @ 20°C | 3.91 bar |
| Relative elettrical resistance @ 1 atm. 21°C (N2=1.0) | 2.0 |
| NFPA 2001 Edition 2012 | |
| Design concentration for Class A Fires | 6.6% (by volume) |
| Flooding factor for Class A Fires | 0.516 kg/m³ |
| Design concentration for Class C Fires | 7.0% (by volume) |
| Flooding factor for Class C Fires | 0.550 kg/m³ |
| ISO 14520 Edition 2006 | |
| Design concentration for Class A/C Fires | 7.9% (by volume) |
| Flooding factor for Class A/C Fires | 0.626 kg/m³ |
| PBPK (5 minutes exposure) | 10.5% |
| Ozone DeplEtion Potential (ODP) | 0 |
| Global Warming potential (GWP) | 2900 |
