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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

In an acute toxicity study (Evonik Goldschmidt, 2005) conducted according to OECD 203 (1992) with rainbow trouts (Oncorhynchus mykiss) the 96-h LC50 of the surrogate test substance was determined to be 1.91 mg/L.

Key value for chemical safety assessment

LC50 for freshwater fish:
1.91 mg/L

Additional information

In a 96-h acute toxicity study (Evonik Goldschmidt, 2005) conducted according to OECD 203 (1992), rainbow trouts (Oncorhynchus mykiss) were exposed to partially unsaturated TEA-Esterquat at nominal concentrations of 0 (control), 1.0, 1.6, 2.56, 4.1, 6.55, 10.55 mg/L under semi static conditions. The mean measured concentrations were determined to be 59 % of nominal concentrations. Sublethal effects such as difficulties with maintenance of balance and unusual behaviour (reduced activity and or orientation to bottom or surface of the test vessels) were observed within the first three hours in the highest test concentration. The 96-h LC50 based on mean measured concentrations was determined to be 1.91 mg/L.

In addition a study (Cognis, 2001) was conducted with partially unsaturated TEA-Esterquat according to OECD 203 (1991). In this study the LC50 of the test substance partially unsaturated TEA-Esterquat was determined to be 2.1 mg/L for Danio rerio.