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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

In a good quality and reliable guideline study, the 96-hour LC50 value for freshwater fish was 2,350 µg a.i./L (i.e., equivalent to 2.35 mg a.i./L).

Key value for chemical safety assessment

LC50 for freshwater fish:
2.35 mg/L

Additional information

An OECD 203 acute toxicity study in fish (Rainbow trout:Oncorhynchus mykiss) under static conditions was conducted with C12-C18 TMAC. Rainbow trout (10 per concentration) were exposed to the test substance at concentrations of 390, 670, 1,090, 1,820 and 3,030 µg/L for 96 hours and mortalities were determined. The 96-hour LC50by non-linear interpolation was estimated to be 2,350 µg/L, with a 95% confidence interval calculated by binomial probability of 1,820 - 3,030 µg/L. No analytical determination was performed for the test substance. The NOEC was established at 1,820 µg/L. Based on the results the 96-hour LC50and NOEC were 2,350 and 1,820 µg a.i./L (i.e., equivalent to 2.35 and 1.82 mg a.i./L), respectively. (Surprenant DC, 1988).