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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

LC50 (fish) > 1 mg/L

Key value for chemical safety assessment

Additional information

The acute toxicity of (2-Ethoxy-1-methyl-2-oxoethyl)-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2-nitrobenzoate to Danio rerio was studied under semi-static conditions in accordance with the EEC Methods for Determination of Ecotoxicity Annex to Directive 92/69/EEC (O.J. No. L383A, 29.12.92) Part C, Method 1 'Acute toxicity for Fish' which is in most parts equivalent to the OECD Guideline for Testing of Chemicals No. 203 'Fish, Acute Toxicity Test'.

Under semi-static test conditions, each 10 fish/group were exposed to a concentration of nominally 1 mg/L of (2-Ethoxy-1-methyl-2-oxoethyl)-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2-nitrobenzoate in a limit test in water. The number of dead fish and the incidence of sub-lethal effects were determined after 2, 24, 48, 72 and 96 h of exposure. The EC50 was > 1 mg/L (nominal) for all time points. No effect on fish was observed at any time point and at the highest concentration achievable.