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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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


Studies on abiotic degradation do not need to be conducted as the substance is readily biodegradable.


The substance 4'-methylacetophenone is readily biodegradable based on the result of two valid screening studies on ready biodegradability.


No study available. The log Kow value of 2.1 however indicates clearly a low potential for bioaccumulation of the substance.

Transport and distribution:

The study on adsorption/desorption does not need to be conducted, as based on the low log Kow of 2.1 the substance can be expected to have a low potential for adsorption. The Koc value calculated with a QSAR method is 33.1 (at 20°C). The substance has low potential for adsorption to soil or suspended particles and is classified as highly mobile in soilaccording to the classification scheme of McCall et al. (1981). Adsorption to sludge or sediment to any significant extent is not to be expected.