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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

Daphnia (21 day) NOEC 25 mg/L Na2H2EDTA corresponding to 20.5 mg/L H3HEDTA.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
20.5 mg/L

Additional information

There are no available studies on HEDTA. The substance is likely to show low long-term toxicity to aquatic invertebrates based on read-across to available studies on EDTA. A 21-day study of toxicity of Na2H2EDTA on Daphnia magna in a reproduction test indicated a NOEC of 25 mg/L.