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EC number: 203-906-6
CAS number: 111-77-3
Four guideline ready biodegradation studies are available to 3 different
methods. Two were duplicate determinations to the same protocol. In a
closed bottle test, the substance reached 68% degradation after 28 days
but did not meet the 10 day window criteria of 60%. The modified sturm
test (CO2 evolution) was repeated in duplicate. Both showed degradation
of >75% after 28 days but only one met the 10 day window criteria. Since
the average of these two results did meet the 10 day criteria, it can be
concluded that 2 -(2 -methoxyethoxy)ethanol is readily biodegradable and
does meet the 10 day window, although this is marginal. However another
study using this method showed rapid and 100% degradation after 28 days.
A conclusion of ready biodegradability is also supported by QSAR
As the substance is identified as readily biodegradable in the screening
studies, further biodegradation testing is not scientifically justified.
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