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EC number: 257-077-0
CAS number: 51240-95-0
1,1,3,3 -tetramethylbutylperoxydecanoate displays bioaccumulation
potential as indicated by a Log Kow of >6.5. However the hydrolysis
1,1,3,3 -tetramethylbutylperoxydecanoate occurs rapidly with a half-life
of between 9 and 15 hours at environmentally relevant pH. There are some
inaccuracies in the hydrolysis test measurements due to the difficulties
associated with measuring the test substance at such low levels. For
this reason an absolute worst case value for hydrolysis is stated as <24
hours. Measurements from ecotoxicological testing suggest this to be
faster however. When considering the additional thermal instability of
the test substance (SADT 15ºC) this substance is classified as themally
instable by the UN and can therefore the parent peroxide cannot persist
at temperatures of 15 ºC or above. Furthermore the reactive nature of
the peroxide bond has a strong tendency to react with organic matter and
metal ions and will therefore subsequently degrade rapidly in the
environment. In conclusion 1,1,3,3 -tetramethylbutylperoxydecanoate is
not able to persist in order to bioaccumulate. Furthermore the extremely
low water solubility and hence low biological availability also
indicates that 1,1,3,3 -tetramethylbutylperoxydecanoate is unlikely to
Due to the lack of ready biodegradation in the closed bottle test it is
evident that the degradation products of 1,1,3,3
-tetramethylbutylperoxydecanoate will persist longer in the environment
than the parent molecule. The predicted (Epiwin) log Kow of the main
degradation product (2,2,4,trimethyl pentan-2 -ol) is <3.0 and therefore
does not have a high potential to accumulate.The predicted BCF for the
main degradation product is low at 30.63 (Epiwin).With the data
available there is no reason to expect bioaccumulation of the primary
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