Flammability limits of olefinic and saturated fluoro-compounds

• Published in: Journal of hazardous materials Vol. 171; no. 1; pp. 613 - 618
• Main Authors: Kondo, Shigeo, Takizawa, Kenji, Takahashi, Akifumi, Tokuhashi, Kazuaki, Mizukado, Junji, Sekiya, Akira
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15-11-2009; Elsevier
• Subjects: Air; Air Pollutants - chemistry; Alkenes - chemistry; Applied sciences; Chemical bonds; Chemistry - methods; Equipment Design; Exact sciences and technology; F-number scheme; F-substitution rate; Flammability; Flammability limits; Fluorine Compounds - chemistry; Gases; Glass; Hazardous materials; Materials Testing; Models, Chemical; Models, Statistical; Olefinic and saturated fluoro-compounds; Pollution; Temperature; Vessels; Volatilization; F-number scheme; Olefinic and saturated fluoro-compounds; F-substitution rate; Flammability limits; Glass; Flammability; Flammability limit; Concentration distribution
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2009.06.042

Flammability limits were measured for a number of olefinic and saturated fluoro-compounds in a 12
l 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.