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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.
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