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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

Description of key information

A well-documented ready biodegradability study was performed by Stevenson in 1981. Although the study was not performed according to a specific guideline (OECD or GLP), the study is well documented and therefore regarded as Key study. The results of this study indicate that AAO has the potential to biodegrade.

Key value for chemical safety assessment

Biodegradation in water:
inherently biodegradable

Additional information

A well-documented ready biodegradability study was performed by Stevenson in 1981. Although the study was not performed according to a specific guideline (OECD or GLP), the study is well documented and therefore regarded as Key study. The study assesses both CO2 -evolution and the Soluble Organic Carbon (SOC) content of the samples. Even though the mineralisation of the AAO yielded only ca. 12% CO2 over the 28 -day test period, the decline in soluble organic carbon indicated that the test substance is used as a carbon source by the bacteria, and as such is metabolized and incorporated into the biomass. The removal of the SOC progressed steadily and reached ca. 98% after 28 days. As a consequence, the test substance was concluded to be inherently biodegradable.