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EC number: 216-600-2
CAS number: 1623-05-8
PPVE is a volatile liquid with low water solubility. It is expected to
distribute into the atmospheric compartment after emission.
Phototransformation reactions with hydroxyl radical will remove PPVE
with an atmospheric half-life of 4.8 days. The proposed pathway for
decay involves direct addition of *OH radicals to the vinylic bond, with
subsequent decay of radical adducts. The ultimate degradation products
are expected to be perfluoropropionic acid and hydrofluoric acid (HF).
PPVE is also subject to hydrolysis. Calculated half-lives were 21.6 to
33.5 hours at 20°C and 29.2 to 43.4 hours at 10 °C. For each of the
temperatures studied, the hydrolytic rate constant and resultant
half-life showed no significant dependence on pH. The primary
hydrolysis products of PPVE at pH 7 were the deprotonated form of
perfluoropropionic acid (CF3CF2-CO2-) and fluoride ion (F-). However,
owing to its volatility, hydrolysis is not expected to be important to
the fate of PPVE.
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