Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: 205-381-9 | CAS number: 139-89-9
Endpoint summary
Administrative data
Description of key information
Additional information
Due to the ionic structure under environmentally relevant pH conditions, no adsorption onto the organic fraction of soil or sediments of EDTA, a structural analogue of the substance, is expected (EU Risk Assessment, 2004). HEDTA is expected to behave in a similar manner to EDTA given their similar ionisation and binding potentials. As such it is likely that HEDTA will remain in salt form in typical environmental conditions (e.g. neutral to mild acidic/alkaline conditions). Based on QSAR modelling (KOCWIN) the Koc is likely to be in the order of 2.138E-07 L/kg in salt form. In highly alkaline conditions the Koc is estimated to be in the order of 10 L/kg for the ionised compound.
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