Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Information on the substance itself is limited to a single, poorly documented, study of inherent biodegradation. A large number of degradation tests are available for EDTA and its salts, a structural analogue of the substance (for justification on read-across, see Section 13). Results from OECD guideline tests indicate that EDTA is not readily biodegradable and tests on inherent biodegradability result in low biodegradation rates.

For EDTA, and by analogy HEDTA, it has been shown that, under slightly alkaline conditions or adaptation, biodegradability is considerably improved. EDTA was >60% biodegradable in an enhanced test using pre-adapted activated sludge. Therefore, it can be concluded that the substance is ultimately biodegradable under such conditions.