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EC number: 203-906-6
CAS number: 111-77-3
Photochemical degradation rate predicted to be approx: 36x10-12 cm3/(molecule.s) with a resultant half life of 4.9hrs in the atmosphere.
If 2 -(2 -methoxyethoxy)ethanol is present in ambient
air, it is expected to exist almost entirely in the vapour phase, based
on the vapour pressure cited in chapter 4. This substance is not
expected to absorb UV light in the environmentally significant range of
>290 nm and is not therefore expected to undergo direct photolysis on
sunlit soil surfaces, in the atmosphere or in aquatic environments.
However, modelling predicts that it is likely to undergo indirect
photolysis through hydroxyl radical reaction at a reasonably fast rate,
with an estimated half life of 4.9 hours (0.41 days) at an OH
concentration of 1.5million OH/cm3 and a 12 hour day).
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