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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

The UVCB 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. 

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