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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Biodegradation: the substance itself (anhydride) is not readily biodegradable.  However the corresponding degradation product (acid) is expected to be readily biodegradable.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

An experimental ready biodegradation test was conducted according to OECD TG 301C. The substance was exposed to activated sludge at 24.0 - 26.0 degree C for 28 days. No biodegradation occurred within this time period as indicated by both indirect and direct analyses. The substance is considered not to be biodegradable.

However the screening test inherent to the water biodegradability of the degradation product, calculated using the same software BIOWIN v4.10, indicate that the corresponding acids (5 -METHAc, 4 -METHAc) are expected to be readily biodegradable.