Flammability limits of olefinic and saturated fluoro-compounds.
Flammability limits were measured for a number of olefinic and saturated fluoro-compounds in a 12l spherical glass vessel. The obtained data together with the ones of previous studies have been analyzed based on the F-number scheme of flammability limits. The flammability limits of these compounds have been found to be explained very well by the present scheme of interpretation. The flammability limits are dependent upon distribution of F atoms in a molecule as well as upon F-substitution rate itself. It has been found that -O-CF(3) group in a molecule conspicuously decreases the flammability of the compound, while -C-CF(3) group does not much. For olefinic compounds, distribution of F atoms around double bonds markedly diminishes the flammability of the molecule.
Kondo
Shigeo
S
National Institute of Advanced Industrial Science and Technology Central 5, Tsukuba, Ibaraki 305-8565, Japan. s.kondo@aist.go.jp
Takizawa
Kenji
K
Takahashi
Akifumi
A
Tokuhashi
Kazuaki
K
Mizukado
Junji
J
Sekiya
Akira
A
D000388:Air; D000393:Air Pollutants / Q000737:chemistry; D000475:Alkenes / Q000737:chemistry*; D002621:Chemistry / Q000379:methods*; D004867:Equipment Design; D017611:Fluorine Compounds / Q000737:chemistry*; D005740:Gases; D005898:Glass; D008422:Materials Testing; D008956:Models, Chemical; D015233:Models, Statistical; D013696:Temperature; D014835:Volatilization
D000393:Air Pollutants; D000475:Alkenes; D017611:Fluorine Compounds; D005740:Gases