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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Partitioning of substances into the different environmental compartments depends mainly on their physico-chemical properties. Several experimental studies confirmed that 2-phenylphenol (OPP) (CAS-No. 90-43-7) is readily biodegradable according to the OECD criteria (70.8-75.7% biodegradation after 28 d). Furthermore, the results of studies investigating the biodegradation in soil (DT50 = 2.7 h) and the phototransformation in water show a rapid degradation of OPP. Therefore, OPP will not be persistent in the environment.

The degradation via abiotic hydrolysis is not considered to be a relevant degradation pathway in the environment since QSAR results using HYDROWIN v2.00 resulted in a half-life (DT50) of >1 yr at pH 7. The substance shows a moderate adsorption behavior (log Koc = 2.4 – 2.6). Evaporation into air and the transport through the atmospheric compartment is not expected, since OPP is not volatile based on the low vapour pressure (VP: < 1 Pa). Accumulation in air and the subsequent transport to other environmental compartments is not anticipated. However, if released into air, OPP is susceptible to indirect photodegradation by OH-radicals with a DT50: < 24 h (AOPWIN v1.92). Due to the low BCF value of 21.7, bioaccumulation in aquatic organisms is not expected.