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Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

The study on acute toxicity of the substance to fish (Danio rerio) was performed under semi-static conditions and the 96 hour-LL50 was determined to be > 100 mg/L (Neuhahn, 2011a).

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
100 mg/L

Additional information

The fish were exposed to a range of concentrations, nominally 25, 50 and 100 mg/L of the substance dissolved in dilution water. Defined loadings of the test item led to a certain percentage proportion of dead fish at the end of the 96 hour study period. Mortalities were recorded at 24 hour intervals. Additionally any abnormal behaviour or appearance of the fish was reported every 24 hours.

After 96 hours of exposure a LL 50 of >100 mg/L (nominal) was determined.

The results are expressed in terms of Lethal Loading (LL). As the test item is a UVCB substance and no information about the correlation between molecular weight und the structural formula of the test item are available, Water Accommodated Fraction (WAF) were used to test effects at different effective loadings and no specific analysis was performed. With the sponsor's agreement, the content of the test item during the exposure period was verified by DOC determination.