Clean Agent Fire Suppression Fluids

A clean agent is a fire suppressant that leaves no residue after discharge and requires no post-event cleanup. The term covers gaseous and certain liquid agents that evaporate completely when deployed, leaving equipment, documents, and sensitive materials undamaged by the suppression itself.

Clean agents extinguish fires by absorbing heat at the molecular level rather than displacing oxygen or applying water. The agent discharges as a gas, reaches extinguishing concentration rapidly, and evaporates completely after discharge, leaving no residue, no water damage, and no equipment loss from the suppression event itself.

FK-5-1-12 is the formal chemical designation for the fluoroketone compound at the core of clean agent fire suppression systems designed around 3M™ Novec™ 1230, registered under CAS number 756-13-8. Of all clean agents listed in NFPA 2001, FK-5-1-12 provides the widest margin of human safety at design concentration, has a GWP below 1, and has zero ozone depletion potential.

Yes. FK-5-1-12 carries EPA SNAP approval for use in occupied spaces and provides the highest margin of human safety among clean agents listed in NFPA 2001. At design concentration, the agent extinguishes fires while remaining within the safety limits for personnel who remain in or evacuate through the protected space during discharge.

CO₂ suppresses fires by displacing oxygen, creating asphyxiation risk in occupied spaces. Aerosols release microscopic potassium particles to attack the fire physically and chemically.  These particles leave behind salt residue on surfaces, and can irritate the eyes, throat, and lungs of human occupants.  Water mist can damage electronics and sensitive materials. Clean agents like FK-5-1-12 extinguish fires by absorbing heat without displacing oxygen or leaving residue, making them the specification for occupied, mission-critical environments.

Clean agent systems in the US are governed by NFPA 2001, and internationally by ISO 14520. Systems must be designed, installed, and maintained to those standards. FK-5-1-12 carries EPA SNAP approval for use in occupied spaces and holds active UL and FM listings.

3M™ exited the fluorochemical market due to legal and regulatory pressure surrounding PFAS as a class. The products themselves were not the issue. Novec™ 1230 remains an approved clean agent under NFPA 2001, FM and UL listings remain active, and the molecule is still in production. Standard Fluids was built to fill the supply gap by the team that built the product in the first place.

By chemical definition, yes. Fluorinated compounds contain carbon-fluorine bonds, which is the basis for the PFAS classification. The PFAS compounds driving most regulatory action, PFOS and PFOA, bioaccumulate in tissue and persist in groundwater for decades. However, fluoroketones like FK-5-1-12 break down in the atmosphere under UV light rather than accumulate, which is why FK-5-1-12 carries a GWP below 1 despite the shared classification. Learn more about PFAS classification and regulation here.

Long-chain PFAS compounds such as PFOS and PFOA are built around fully fluorinated carbon chains with no reactive functional groups, which is what makes them persist in biological tissue and the environment for decades.

Fluoroketones contain a carbon-oxygen double bond that creates a reactive site, allowing the molecule to break down in the atmosphere under UV radiation. That structural difference produces a low GWP and means fluoroketones do not bioaccumulate, despite the shared PFAS classification.