Registration Dossier
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EC number: 213-888-1 | CAS number: 1052-38-6
Short-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Due to the insolubility in water of the test substance no derivation of PNEC is performed and only a qualitative assessment for the co-compartment is proposed.
Key value for chemical safety assessment
Additional information
Two tests of the substance for acute toxicity to fish following OECD 203 are available. In the first test (BASF, 2007) Zebra fishes were tested in a static test freshwater, at a single dose concentration of 100 mg/l (nominal) for 96h. The concentration of the substance was sampled and analysed after filtration by spectrophotometry. The measured tested concentration resulted equal to 0.74 mg/l. The LC50, 96h (NOEC, 96h) is equal to the solubility limit of the test substance in the media under the test conditions, i.e. 0.74 mg/l (measured) or 100 mg/l (nominal). No concentrations greater than the solubility limit were tested.
In the second test (Kemira, 1990) Zebra fishes were tested at different nominal concentrations, i.e. 0, 100, 316, 1000 and 3612 mg/l and the solutions were not analysed. After 24h precipitation of a brown solid at the bottom of the test vessels was observed. The EC50 (NOEC) > 1000 mg/l, i.e. 560 mg/l as nominal active ingredient.
Considering that the BASF test is more recent and that the test concentrations were experimentally measured, this study is considered relevant for assessing the end point.
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