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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The test substance is  acutely harmful to fish (96 h LL50 is 4.5 mg/L) based on read across results from an analog substance EC 283-392-8. 

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
4.5 mg/L

Marine water fish

Marine water fish
Effect concentration:
46 mg/L

Additional information

Since tests on toxicity of the UVCB substance itself to fish are not available, a conclusion by analogy approach according to Annex XI of REACH has been applied.

The acute aquatic toxicity of the analogsubstance, EC 283-392-8,was evaluated using rainbow trout and was conducted in accordance with OECD Guideline 203 (Goodband, TJ, 2001). The 96 h LL (Lethal Loading Rate) 50 value of the substance was determined to be 4.5 mg/l. The NOEL was 1.8 mg/l.

The 96 h LC50 and NOEL values for an analog of this substance, EC 270-608-0, with the saltwater speciesCyprinodon variegataswas determined to be 46 mg/l and less than 26 mg/l, respectively.