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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Link to relevant study record(s)

Description of key information

The key value for chemical safety assessment was one of the obtained results for triethylamine regarding chronic toxicity to aquatic invertebrates (Ministry of the Environment in Japan, 1999). 

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
11 mg/L

Additional information

The Ministry of the Environment in Japan (1999c) conducted an ecotoxicological experiment to investigate the long-term toxicity towards the freshwater invertebrate Daphnia magna. The experimental conditions were in accordance with OECD Guideline 211. As final results, an EC50(21d) of 38 mg/L as well as the NOEC(21d) of 11 mg/L are reported.

Furthermore, the chronic aquatic toxicity of triethylamine was also investigated by Collins (1994). The mobility inhibition of Ceriodaphnia dubia has been determined according to method 1002.0 (US EPA 1989). The test organisms were exposed for 7 days to an aqueous solution of triethylamine at nominal concentrations of 1.9, 3.8, 7.5, 15, 30 mg/L (measured concentrations of 1.9, 3.7, 7.1, 14 and 28 mg/L).

As final results, the LOEC (7d) was determined as 14 mg/L and the NOEC (7d) as 7.1 mg/L. The mean MATC (Maximum acceptable toxicant concentration) is reported as 10 mg/L.