Registration Dossier
Registration Dossier
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EC number: 620-056-5 | CAS number: 874195-61-6
Endpoint summary
Administrative data
Description of key information
Additional information
Short-term toxicity data are available for all three trophic levels (fish, Daphnia and algae). Algae turned out to be distinctly more sensitive than invertebrates and fish.For growth inhibition of the unicellular green algae Pseudokirchnerella subcapitata an EC50 (72h) of 6.23 mg a.s./L (nominal) and a NOEC (72 h) of 0.096 mg a.s./L (nominal) are reported for triafamone.Whereas in the test with the water flea Daphnia magna effects were observed mainly at concentrations above the maximum saturation concentration.In the highest test concentration of 50 mg a.s./L less than50% immobilization of Daphnids was determined. In vertebrate tests with two different fish species (Cyprinus carpio and Oncorhynchus mykiss) no mortality was observed up to the highest test item concentration of 100 mg a.s./L (nominal).
Long-term toxicity testing with aquatic fish and invertebrates was not proposed as fish and invertebrates are not the most sensitive organisms, the substance is not expected to bioaccumulate in aquatic organisms (log Kow = 1.5) and as the substance is used as herbicide it has no specific impact on aquatic fish and invertebrates.
The study on the toxicity to aquatic microorganisms shows, that the substance does not significantly inhibit the respiration of activated sludge microorganisms. Hence, no effects of the substance are expected during the wastewater treatment in the sewage treatment plant.
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