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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

LC50 (96h) = 62.4 mg/L (nominal, based on active matter) for Leuciscus idus (OECD 203, read across)

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
62.4 mg/L

Additional information

No studies investigating the toxicity to fish of Sodium hydrogen N-(1-oxododecyl)-L-glutamate (CAS No. 29923-31-7) are available. Thus, available data for the source substance l-Glutamic acid, N-coco acyl derivs., monosodium salts (CAS No. 68187-32-6) was used in a read-across approach. The read across is considered valid as the target substance is the major component, and the central member of an homologous series of components, of the source substances, possessing identical functional groups and extremely similar structures.  It is reasonable to expect that the toxicological properties of the target and source substances will not be markedly different.  On this basis, experimental data on the source substances are expected to be directly applicable to the target substance, and can be used to adequately predict its properties. Further details are provided in the in the field “Attached documents”.

The read across key study was performed according to GLP and OECD guideline 203 using Leuciscus idus as test organism (Hoechst, 1990). A 32 % solution of the UVCB substance in water was tested. Nominal concentrations between 48 and 64 mg/L (based on active matter) were tested over a period of 96 h. The 96h-LC50 is determined to be 62.4 mg/L. Due to the rational provided above for the read-across approach, this result can also be considered for Sodium hydrogen N-(1-oxododecyl)-L-glutamate (CAS No. 29923-31-7)