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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

Several studies with multiple EDTA compounds have been performed on several species of fish, incl rainbow trout, zebrafish bluegill sunfish, guppy and fathead minnow. The reliable endpoint from the study by Dow (/Batchelder) using the testsubstance EDTA-ZnNa2 with the bluegill sunfish was chosen as key (LC50 medium hard = 685 mg/L). Recalculation to EDTA-ZnK2 would give 740 mg/L.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
740 mg/L

Additional information

Several studies with multiple EDTA salts or complexes covering multiple fish species indicate EDTA and/or related salts are not highly toxic to fish under common environmental conditions. Exposure to fish in soft waters could enhance toxicity, however, all data indicate LC50 values > 40 mg/L.