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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

LC50 (48h) HEDTA-Na3: marine species (Acartia Tonsa) 2296 mg/L; freshwater species (Daphnia magna) 192 mg/L corresponding to 1843 and 154 mg/L for HEDTA-H3 respectively.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
154 mg/L
EC50/LC50 for marine water invertebrates:
1 843 mg/L

Additional information

Short term effects on aquatic invertebrates of HEDTA has been investisgtaed in a marine species (Acartia Tonsa) and a freshwater species (Daphnia magna). Results in the marine species indicate a 48 hour LC50 of 2296 mg/L while data from the feshwater species indicate a 48 hour LC50 of at least 192 mg/L.