Registration Dossier
Registration Dossier
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EC number: 430-500-8 | CAS number: 204277-61-2
Endpoint summary
Administrative data
Description of key information
Additional information
Short-term toxicity tests are available for all three trophic levels (fish, invertebrates and algae). The 96 -hour LC50 in Zebra fish is greater than 1.5 mg/L , the 48 -hour EC50 for immobilization of Daphnia magna is graeter than 1.5 mg/L. The 72 -hour EC50 and LOEC in algae was found to be greater than 1.5 mg/L. In an activated sludge respiration inhibition test the 3h-EC50 and IC20 were found to be greater than 1000 mg/L.
Due to the very low water solubility of the test substance in water the actual concentrations of dissolved test substance in the analysed
test media were below the analytical detection limit of 1.5 mg/l. The test solution was prepared according to the "OECD_Guidance
document on aquatic toxicity testing of difficult substances" (Draft June 1998] and the "Guidance on the aquatic toxicity testing of
difficult substances" (Department of the Environment, London, United Kingdom, May 1996) to ensure that the fish, algea and Daphnia were exposed to the maximum achievable dissolved concentration of the test substance in the test medium (= saturation concentration).
In the activated sludge experiment, due to the physicochemical properties that the test substance was not completely soluble in the test medium. The reported results are related to the amount of the test substance given into the test system. An IC50 value for the test substance could not be calculated.
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