Chemical structures of dichlorotrifluoroethane (top) and tetrafluormethane (bottom), the two major components of Halotron I
|NFPA 704 (fire diamond)|
|Lethal dose or concentration (LD, LC):|
LC50 (median concentration)
|3.2% (4 hrs, inhalation)|
|Safety data sheet (SDS)||Halotron|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Global emission concerns
It was originally introduced in 1992 to replace the severely ozone-depleting Halon 1211 (bromochlorodifluoromethane). Halon 1211 has a global warming potential of 1890, whereas Halotron I's GWP is 77, being a 96% reduction.
In December 2011, Halotron I was tested against "hidden fires", spurred by the effectiveness its predecessor demonstrated on an in-flight fire aboard a Delta L-1011 flight on March 17, 1991. The test was conducted at UL, and demonstrated similar effectiveness as Halon 1211, with significantly less human and global harm. Although the fire extinguishing effectiveness is similar, Halotron I requires a larger chemical volume to get the same ratings as Halon 1211.
UN1956, Compressed Gases, N.O.S., Nonflammable Gas. IMCO CLASS: 2.2
- "Halotron". www.halotron.com. Retrieved 24 April 2023.
- "Sixth Triennial International Fire & Cabin Safety Research Conference" (PDF). fire.tc.faa.gov. 2010. Retrieved 24 April 2023.
- "R0201336.pdf" (PDF). NIST.gov. Retrieved December 23, 2017.