Registration Dossier
Registration Dossier
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EC number: 263-000-1 | CAS number: 61788-71-4
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Aquatic toxicity studies of naphthenic acids, nickel saltsare not available. Thus, read-across to the assessment entities soluble nickel substances and naphthenic acid is applied since the ions of naphthenic acids, nickel saltsdetermine its fate and toxicity in the environment. Reliable studies indicate that the moiety of ecotoxicological concern are nickel cations. For nickel LC50 values of freshwater species range from 0.4 mg Ni/L (Pimephales promelas; Hoanget al., 2004) to 320 mg Ni/L (Brachydaniorerio; Janssen Pharmaceutica, 1993d) and from 24.8 mg Ni/L (Fundulus heteroclitus; Bielmyeret al., 2013) to 350 mg Ni/L (Fundulus heteroclitus) for marine organisms. 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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