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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 acute toxicity of the test substance to fish was assessed in two studies conducted on Pimephales promelas, which revealed LC50 values of 6.7 mg/L and 10.8 mg/L. For risk assessment and C+L a key value of 6.7 mg/L was used.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
6.7 mg/L

Additional information

Two publications are available in which the acute toxicity of the test item to fish was determined. These publications are used in a weight of evidence approach.

The first publication describes a 96 hours test conducted on Pimephales promelas. 20 fish each were exposed to one of the following nominal test substance concentrations: 0 (control), 8.48, 13, 20.1, 30.9 and 47.5 mg/L, mean measured concentrations were 0, 7.46, 11.5, 17.0, 26.1, 42.2 mg/L. Mortality occurred in every dose group but not in the control group. The LC50 value was determined to be 10.8 mg/L.

In the second publication a study is described which was also conducted on Pimephales promelas, in this assay the fish were exposed to the test substance in a flow through system. Five concentrations were tested. As a result, the LC50 was determined to be 6.7 mg/L.