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EC number: 257-077-0
CAS number: 51240-95-0
1,1,3,3 -tetramethylbutyl peroxyneodecanoate is inherently biodegradable
(25% degradation) and poorly water soluble (33µg/L). The log Kow of
1,1,3,3 -tetramethylbutyl peroxyneodecanoate exceeds 6.5.
The Log Koc of 1,1,3,3 -tetramethylbutyl peroxyneodecanoate is also high
with a value of 4.7. These physical chemical parameters suggest that
1,1,3,3 -tetramethylbutyl peroxyneodecanoate will bind strongly to
organic matter and soil/sediment and therefore has the potential to
accumulate in these compartments. When considering the rapid hydrolysis
of 1,1,3,3 -tetramethylbutyl peroxyneodecanoate however which has a half
life as a worst case of <24 hours. The parent peroxide will not be able
to persist for long periods in an aquatic environment or in compartments
where water is present. In addition the self accelerating decomposition
temperature of 1,1,3,3 -tetramethylbutyl peroxyneodecanoate is 15 ºC,
above which the parent molecule cannot persist. When further considering
the highly reactive nature of the peroxide group and known reactions
with metal ions and organic material as well as the measured poor
stability in ecotoxicity testing, the relevance of basing an
environmental risk assessment purely on the parent material should be
carefully considered. Properties of the known degradation products
should also therefore be considered for a more complete assessment.
The primary degradation product is 2,4,4 -trimethyl pentan-2 - ol which
has been confirmed analytically in additional studies. Neodecanoate is
also likely to be formed based on structural analysis of the parent
molecule. Distribution modeling of both degradation components in Epiwin
(Level III Fugacity Model) suggest a tendency to accumulate in the soil
(approximately 60%) and in water (approximately 30%) with small
distribution to the other remaining compartments. The predicted
half-lifes in water and soil are 360 and 720 hours respectively.
Volatilization from water bodies is expected for Neodecanoate (6 -71
2,4,4 -trimethyl pentan-2 - ol (1 -14 days). Both are predicted to be
rapidly degraded by hydroxyl radicals in the atmosphere.
Consideration should be made to the mentioned fate and distribution
information if further testing is required as a result of the chemical
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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