Registration Dossier
Registration Dossier
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EC number: 425-400-6 | CAS number: 179986-09-5
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
With high probability acutely not harmful to aquatic invertebrates.
Key value for chemical safety assessment
Additional information
The substance was tested as WAFs for its acute toxicity to Daphnia magna over a period of 48 hours in a static system (RCC 1996). The study was performed according to the OECD Guideline No. 202 Part I and GLP requirements.
This study examined three WAFs with loadings of 100, 33 and 10 mg/L on two groups of ten daphnids per loading. Because of the large number of components present in the test article, no complete quantitative analysis could be performed. Instead, a HPLC profile of the UV-absorbing components was done in a separate study. No immobility of Daphnia magna occurred at loadings of 10 and 33 mg/L. At the 100-mg/L loading, no immobility was observed after 24 hours of exposure, but 30 % immobilization was noted after 48 hours of exposure.
Based on the above observations and expressed as loading concentrations, after 48 hours of exposure the EC0 was >= 33 mg/L and the EC50 was >100 mg/L.
In a screening test according to OECD 202 Part I, daphnids were exposed for 48 h to a 100 mg/L solution of the test item stirred by ultra-sonic or as filtrate of this solution (NOTOX 1996). In none of the treatments, animals were immobilised. The LC0 is therefore >= 100 mg/L and the LC50 is > 100 mg/L.
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