Registration Dossier
Registration Dossier
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EC number: 215-657-0 | CAS number: 1338-02-9
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Aquatic toxicity studies of copper naphthenate are not available. Thus, read-across to the assessment entities soluble copper substances and naphthenic acid is applied since the ions of copper naphthenate determine its fate and toxicity in the environment. Regarding copper toxicity in aquatic environments, a large set of data is available including multiple studies on freshwater fish species D. rerio, C. carpio, P. promelas and O. mykiss as summarized in the attached report “Derivation of acute Ecotoxicity Reference Values (ERVs) for copper”, resulting in pH-dependent species-specific geometric mean values E(L)C50 of 47.4 -63.6 µg/L (O. mykiss), 20.2 -167.4 µg/L (D. rerio), 810 µg/L (C. carpio) and 12.1 -255.9 µg/L (P. promelas). Data for naphthenic acid point to a moderate toxic potential to freshwater fish (Pimephales promelas) with a 96-h LC50 of 5.62 mg/l (measured arithmetic mean).
Key value for chemical safety assessment
Additional information
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