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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Key study is the study by van Ginkel & Stroo (1999) with the actual test substance according to guideline. Three types of natural waters were used and showed high degradation percentages after prolonged test durations.

Key value for chemical safety assessment

Biodegradation in water:
inherently biodegradable

Additional information

According to the EU RAR (2004) for EDTA:

Results obtained at a pH of 8 could be relevant because the pH value of lake and river water ranges from 7.7 to 8.5. However, in surface waters EDTA is preferably complexed with heavy metal ions. Regarding the degradation tests with metal chelates, no substantial biological degradation is expected, especially for those with a high stability constant.