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Preferred IUPAC name
Other names
Trifluoromethyl iodide
Perfluoromethyl iodide
Freon 13T1
2314-97-8 YesY
ChemSpider 15962 YesY
ECHA InfoCard 100.017.286
EC Number 219-014-5
Jmol 3D model Interactive image
PubChem 16843
RTECS number PB6975000
UNII 42A379KB0U YesY
Molar mass 195.91 g/mol
Appearance Colorless odorless gas
Density 2.5485 g/cm3 at -78.5 °C
2.3608 g/cm3 at -32.5 °C
Melting point −110 °C (−166 °F; 163 K)
Boiling point −22.5 °C (−8.5 °F; 250.7 K)
Vapor pressure 541 kPa
Safety data sheet See: data page
Muta. Cat. 3
R-phrases R68
S-phrases (S2), S36/37
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
YesY verify (what is YesYN ?)
Infobox references

Trifluoroiodomethane, also referred to as trifluoromethyl iodide is a halomethane with the formula CF3I. It is an experimental alternative to Halon 1301 (CBrF3) in unoccupied areas.[1] It would be used as a gaseous fire suppression flooding agent for in-flight aircraft and electronic equipment fires.


It is used in the rhodium-catalyzed α-trifluoromethylation of α,β-unsaturated ketones.[2]

In the presence of sunlight or at temperatures above 100 °C it can react with water, forming hazardous by-products such as hydrogen fluoride (HF), hydrogen iodide (HI) and carbonyl fluoride (COF2).

Environmental effects[edit]

Trifluoroiodomethane contains carbon, fluorine, and iodine atoms. Although iodine is several hundred times more efficient at destroying stratospheric ozone than chlorine, experiments have shown that because the weak C-I bond breaks easily under the influence of water (owing to the electron-attracting fluorine atoms), trifluoroiodomethane has an ozone depleting potential less than one-thousandth that of Halon 1301 (0.008-0.01). Its atmospheric lifetime, at less than 1 month, is less than 1 percent that of Halon 1301, and less even than hydrogen chloride formed from volcanoes.

There is, however, still the problem of the C-F bonds absorbing in the atmospheric window.[3] However, the IPCC has calculated the 100-year global warming potential of trifluoroiodomethane to be 0.4 (i.e., 40% of that of CO2).[4]

Further reading[edit]


  1. ^
  2. ^ 171441 Trifluoroiodomethane 99%
  3. ^
  4. ^

External links[edit]