Halon is a "clean agent". The National Fire Protection Association defines a "Clean Agent" as "a non-conductive, volatile, or gaseous fire extinguisher that leaves no residue upon evaporation."
Halon is a liquefied, compressed gas that stops the spread of fire chemically by interrupting combustion. Halon 1211 (a liquid flow agent) and Halon 1301 (a gaseous flooding agent) leave no residue and are remarkably safe for human exposure. E l Halon is rated for the class "B" (flammable liquids) and "C" (electrical fires), but is also effective in fires class "A" (common fuels). Halon 1211 and Halon 1301 are chemically stable, low toxicity compounds that, as long as they remain contained in cylinders, are easily recyclable.
Halon is an extremely effective fire extinguishing agent, even at low concentrations. According to the Halon Alternative Research Corporation: “Three things must come together at the same time to start a fire: the first ingredient is fuel (anything that can burn), the second is oxygen (normal breathing air is ample) and the latter is a source of ignition (heathigh can cause a fire even without a spark or an open flame.) Traditionally, to stop a fire you need to remove one side of the triangle the ignition, fuel or oxygen Halon adds a fourth dimension to Fire fighting, breaking the reaction in a chain, so that the fuel, the ignition and the oxygen dance together chemically reacting with them ”.
A key benefit of halon, as a clean agent, is its ability to extinguish fires without producing waste that could damage the assets that are protected. Halon has been used for fire and explosion protection throughout the 20th century and remains an integral part of safety plans in many of today's manufacturing, electronics, and aviation companies. Halon protects computer and communication rooms throughout the electronics industry; It has numerous military applications on ships, airplanes, and tanks and helps ensure safety on all commercial aircraft.
