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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

In a reliable guideline study, 96 hour LC50 value was determined to be 0.3 mg/L (i.e., equivalent to 0.15 mg a.i./L) for the read-across substance C16-C18 and C18 unsat., TMAC.

Key value for chemical safety assessment

LC50 for freshwater fish:
0.15 mg/L

Additional information

An acute toxicity to fish study conducted according to OECD guidelines.Rainbow trout (Salmo gairdneri) was exposed to the read-across substance C16-C18 and C18 unsat., TMAC under static conditions.Five fish per vessel (in duplicate) were exposed to nominal concentrations of the test substance at 0.05, 0.1, 0.2, 0.5, 0.7, 1.0, 1.4, 2.0 mg/L.No analytical determination was performed for the test substance.Mortality and other visible abnormalities were observed at 1, 24, 48, 72 and 96 hours after the start of the test.There was 100 % mortality observed at concentrations ≥0.5 mg/L by 24 hours and there was 0% mortality at 0.2 mg/L (next lower concentration). The 96 -hour LC50 was determined to be at 0.3 mg/L.

Under the conditions of the study, the 96-hour LC50 value was determined to be 0.3 mg/L (i.e., equivalent to 0.15 mg a.i./L) (Dommrose A, 1987).