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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


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Administrative data

Link to relevant study record(s)

Description of key information

Waived:  The substance is readily biodegradable.  Hydrolysis is not expected to be a relevant environmental fate process

Key value for chemical safety assessment

Additional information

In accordance with Column 2 of REACh Annex VIII, the testing of hydrolysis is not required as the substance is readily biodegradable. A preliminary hydrolysis test (OECD 111) for the structurally-analogous substance 2 -phenoxy-1 -ethanol showed the substance to be stable at pH 4, 7, and 9 and 50 °C over five days. Therefore, the hydrolysis half-life of diphenyl ether can be assumed to be > 1 yr. at 25 °C. Hydrolysis is not expected to be an important processes affecting the fate of this readily biodegradable substance in the environment.