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EC number: 201-201-8
CAS number: 79-38-9
Rate constant with OH radicals = (7.27 ± 0.4) x 10^-12 cm cu/mol sec at 297K (24°C)Atmospheric half life = 2.2 days
Information regarding the atmospheric degradation of
chlorotrifluoroethylene (CTFE) was sourced from 5 review articles of
All the studies agree on the fact that the reactions of CTFE in the
atmosphere are very fast which indicates a very low persistence of CTFE
in the atmospheric compartment.
In particular the rate constant of the reaction of CTFE with OH radicals
is of 10^-12 cm3 molecule^-1s^-1 order of magnitudo and that its
atmospheric life time is of few days (2 -3 days).
In respect to the
reaction with ozone a rate
constant of 1.6 X 10^-20 cm cu/mol sec and a half-life for this of 715
days at an ozone concentration of 7 X 10+11 mol/cm cu has
been estimated for CTFE.
The values selected as key information were sourced from the article of
Abbatt J.P.D. et al. which reports the rate constant of the reaction of
CTFE with OH radicals at ambient temperature.
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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