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EC number: 915-730-3
CAS number: -
photodegradation of OTNE was studied by Aschmann et al. (2001) under
laboratory conditions using blacklamps for irradiation (l > 300 nm)
at 25 °C and 740 mm Hg (0.986 bar) total pressure of purified air at
~5% relative humidity. Rate constants were measured for the gas
phase reactions of OH radicals, NO3 radicals and ozone.
The measured rate constants (in cm3molecule-1s-1)
are 9.85 ± 0.88.10-11
(OH radicals), 17.1 ± 1.9.10-12(NO3
radicals) and 2.1 ± 0.5.10-18(O3).
with estimated ambient atmospheric concentrations of OH radicals, an
atmospheric lifetime of 1.4 hours is calculated (t½ = 1 h) based on
a 12-hour daylight average atmospheric concentration of 2.0.106
molecule cm-3, assuming a daylight period of 12 h
and 1.5.106 OH cm-3, t½ based on the empirical
rate is 1.9 h.
reaction with NO3 radicals and O3, the
atmospheric lifetime is 2 minutes (t½ = 1.4 min) and 8 days (t½ =
5.5 days) respectively. These data indicate that the atmospheric
lifetime of OTNE is sufficiently short that it will not undergo
long-range transport to any significant extent
substance does not have an ozone depletion potential because it does
not contain halogens and does not have the potential to reach the
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