Registration Dossier
Registration Dossier
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EC number: 205-759-3 | CAS number: 150-39-0
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Only data are available for structural analogue Na3HEDTA, hence read across and molecular weight corrections have been applied.
LC5 (96h): marine species (Scophthalmus maximus) > 738 mg/L. Freshwater species 808 mg/L in Lepomis macrochirus, 372 mg/L in Pimephales promelas and between 862 and 1861 mg/L in Leuciscus idus. For H3HEDTA the lowest LC50 would hence be 276.3/344.2 x 372 = 299 mg/L
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 299 mg/L
Additional information
A number of studies have been done to investigate short term effects on fish of HEDTA, including one study on a marine species (Scophthalmus maximus) (Schlumberger Dowell, 1999) and a number of studies on freshwater species. In the marine species, no mortalities were reported at the maximum exposure concentration of 738 mg/L. Data from the freshwater studies reveal an LC50 of 808 mg/L in Lepomis macrochirus, 372 mg/L in Pimephales promelas and between 862 and 1861 mg/L in Leuciscus idus. These all indicate that acute toxicity to fish is low.
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