Registration Dossier
Registration Dossier
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EC number: 201-247-9 | CAS number: 80-07-9
Bioaccumulation: terrestrial
Administrative data
Link to relevant study record(s)
Description of key information
Not enough evidence is available to assess finally on terrestrial bioconcentration or biomagnification across terrestrial food chains. New data on substance concentration in the environment and biota, sampled taking into account results of appropriate model simulations are expected to provide a basis for final assessment.
Key value for chemical safety assessment
Additional information
Kelly et al. (2004) proposed a model based on Koa and Kow to predict the biomagnification potential. According to that substances with log Koa≥ 5 exhibit a slower rate of elimination by exhalation and may exhibit a potential for accumulation, except if they are readily excreted. In addition for substances with a log Kow≥ 2 urinary excretion is generally slow. As a consequence such compounds with both properties have an inherent biomagnification potential in air breathing organisms (Gobas et al 2009), e.g. birds and seals.Considering Koa and Kow the model characterizes DCDPS as substance potentially biomagnifying in air-breathing organisms.
Environmental field measurements were carried out on bird and fish samples. The samples were not in close geographic and time correlation and media concentration from the sampling area are lacking. Norström (2006) suggest, nevertheless, biomagnification when comparing the MEC from biota.
In accordance with Annex I of the REACH legislation all available information/evidence on bioaccumulation, like for example field data, shall be considered. The quantity and quality of field data may be limited and their interpretation difficult (ECHA 2008a Guidance on information requirements and chemical safety assessment, Chapter R.11: PBT Assessment p 25).
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