Registration Dossier
Registration Dossier
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EC number: 271-802-8 | CAS number: 68608-82-2 A complex combination of hydrocarbons obtained by the alkylation of benzene with ethene. It consists primarily of ethylbiphenyls, diethylbenzenes with lesser amounts of butylbenzenes and polyethylbenzenes.
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
Description of key information
The study will not be conducted based on REACH guidance for waiver.
Key value for chemical safety assessment
Additional information
The supported uses for this substance are limited to industrial closed systems and as such are not expected to lead to direct or indirect exposure to the environment. Therefore the test is not required based on REACH guidance.
However, under unlikely circumstances of accidental release of the test substance (e.g., unplanned event of loss of containment), soil compartment would be the most likely receiving environmental media. According to Column 2 of REACH Annex IX (“9.2. Further biotic degradation testing shall be proposed by the registrant if the chemical safety assessment according to Annex I indicates the need to investigate further the degradation of the substance and its degradation products. The choice of the appropriate test(s) depends on the results of the chemical safety assessment and may include simulation testing in appropriate media (e.g. water, sediment or soil).”), soil compartment is the most likely environmental media for receiving potential accidental release. Therefore, aerobic mineralisation in surface water – simulation biodegradation test (test method: EU C.25./OECD 309) and sediment degradation testing (OECD 308) are justified to be waived. In addition, the OECD 307 soil simulation test is likely to provide more accurate information about the biodegradability of the substance than the OECD 308 test, which is prone to significant experimental issues (M. Honti and K. Fenner, Environ. Sci. Technol. 2015, 49, 5879−5886).
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.
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