Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Bioaccumulation of biphenyl is assessed on the basis of both screening (measured log Kow = 4.008) and definitive criteria (measured BCF in multiple species). Whereas the log Kow may be indicative of moderate potential for bioaccumulation, the available results from bioconcentration tests in alga, fish, and oyster indicate a low potential for bioaccumulation, which appears to be influenced in part by the ability of organisms to metabolise the substance to more polar and excretable substances. A highly conservative fish BCF value of 1,900 L/kg is used for PBT and Chemical Safety Assessment, while a more realistic and relevant value of BCF = 438 is reported by Neely et al. for accumulation of biphenyl in edible fish tissue. Biphenyl is concluded to be not B/not vB, and to have low bioaccumulation potential in the environment.