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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

NOEC >= than 25.7 mg/L after 35 days exposure, recalculated to H3HEDTA would give > =18.5 mg/L.

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater fish:
18.5

Additional information

There are no available studies on the long term toxicity of exposure to HEDTA to Fish. Read-across to EDTA is considered appropriate based on similar ionisation potentials for EDTA and HEDTA. Long-term toxicity of CaNa2EDTA on freshwater fish was measured in an early life study with Brachydanio rerio (BASF, 2001). Results indicated a NOEC of equal or greater than 25.7 mg/L after 35 days exposure .