PhostrEx is a fire suppression agent developed for use in aviation applications to replace halon, a greenhouse gas (GHG).
These concerns, including halon's ozone-depleting and global warming characteristics, prompted the Montreal Protocol to outlaw its use.
PhostrEx meets the requirements of both the Montreal Protocol and the Clean Air Act, and is the first commercially viable Federal Aviation Administration and United States Environmental Protection Agency certified halon replacement fire extinguishing agent.
[2] PhostrEx reacts very quickly with atmospheric moisture, breaking down into phosphorus acid and hydrogen bromide.
The extinguishing effect of Halon is through interference of the thermal balance of the flame, and to a small extent by interfering with the chemical reaction of the fire.