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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Biodegradation in water: screening tests

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Administrative data

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Description of key information

Not readly biodegradable

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Under standard test conditions in Dystar reports (1998) MG did not show to be readily biodegradable (0.3%, 14 days, OECD 301C). This value is confirmed by EpiSuite prediction and by the result of the analogous substance Crystal Violet 4. An indication of inherent biodegradation is given by Dystar reports (1998) where a value of 82% of degradation in Zahn-Wellens test is reported, but any detail is missing about time and testing conditions.