Registration Dossier
Registration Dossier
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EC number: 204-126-9 | CAS number: 116-14-3
Endpoint summary
Administrative data
Description of key information
Additional information
At normal (ambient) temperatures and pressure, tetrafluoroethylene (TFE) is a colourless, odourless, flammable gas that is only slightly soluble in water. The logPow for tetrafluoroethylene (TFE) was calculated by the US EPA KOWWIN v.1.67 program to be 1.21.
Commercial TFE has a typical purity of >99.7%. Common impurities are various other fluorocarbons, depending upon the conditions of the process.
TFE can decompose explosively in the absence of air, via a dimerisation intermediate, to CF4 and carbon. This reaction can be initiated by exposure of TFE vapour to high temperatures or other ignition sources and its susceptibility increases with increasing pressure. A saturated TFE vapour can explode at a pressure of at least 10320 hPa, while an unsaturated vapour can explode at 25°C and 7900 hPa. TFE is also flammable in air, within certain concentration limits. Furthermore it can undergo explosive autopolymerisation in the presence of oxygen.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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