Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 284-366-9
CAS number: 84852-53-9
Stability and degradation
EBP was demonstrated to be stable and not
biodegrade in several test systems, STP simulation systems, aerobic and
anaerobic sediment and soil studies according to standard OECD test
guidelines (OECD 308 and 307), but with prolonged exposure durations of
6 months. In the sediment it was verified that microorganisms capable of
degrading organo-halogen compounds were present. A recent study in
aerobic soils with 6 plant species also showed no formation of
metabolites during the 61d exposure period. A study carried out to
mimmick recycling in HIPS manufacture containing EBP and EBP and Sb2O3
under realistic worst case conditions and temperatures also revealed
that the substance remained stable and only a minor increase of the Br9
-isomers occurred after 6 recycling cycles. Several studies in polymers
and under incineration conditions have demonstrated that no
polybrominated dioxin or-furans are formed during those processes.
Thus it can be concluded that the substance
itself is very persistent and does not form degradation products that
could have a higher bioaccumulation or toxicity potential under
environmental conditions or under reasonable worst case use conditions.
recent guideline studies according to OECD 305 and GLP with dietary
exposure were performed following the substance evaluation decision.
These studies demonstrated the extremely
low potential for bioaccumulation of EBP compared to known reference
substances. It could also beconfirmed in those studies that the
substance is hardly absorbed from the gastro-intestinal tract and the
low tissue levels are depurated quickly. EBP was also used as a
benchmark chemical that is poorly absorbed in fish by Xiao et al. 2013.
With reagrd to a possible bioaccumulation potential in terrestrial
organisms, several studies have shown that a trophic magnification is
unlikely and the rat toxicokinetic study also suggests very little
absorption and uptake in mammalian tissues after a single oral exposure.
Transport and distribution
Modeling indicates EBP is expected to
partition in the environment to sediment and soil (ca. 99%). Negligible
distribution to air and water are expected. High binding to particulates
in all media is expected. Photolysis and hydrolysis are not expected to
be significant routes of environmental degradation. Sewage treatment
plants are expected to remove > 95% of that present in the influent.
Removal is expected to be via binding to particulates rather than
biodegradation. Volatilization is not expected due to the low vapour
pressure. Monitoring data generally confirm this distribution pattern.
EBP's physical and chemical properties will
limit exposure and uptake. EBP'scharacteristic
travel distance is expected to be low and long range atmospheric
transport is not expected. Its movement in the atmosphere will be
governed by the particulates to which it is bound. Atmospheric losses
are expected to occur via wet and dry deposition.
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.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again