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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

NOEC (21d) = 0.218 mg/L (TWA) for Daphnia magna (OECD 211)

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater invertebrates:
0.218 mg/L

Additional information

One study investigating the long-term toxicity of Reaction mass of sodium hydrogen N-(1-oxooctadecyl)-L-glutamate and stearic acid to aquatic invertebrates is available. This key study was performed according to GLP and OECD guideline 211 using Daphnia magna as test organism (Zawadsky, 2013). Nominal concentrations between 0.75 and 12 mg/L were tested under semi-static conditions (daily renewal) over a period of 21 days. Since in the aged test solutions (1 day) the mean measured content of the test substance was only 34 % of nominal, the toxicological endpoints were evaluated using time-weighted means of the measured concentrations. Based on these calculated test substance concentrations the 21d-NOEC for reproduction is determined to be 0.218 mg/L.