Registration Dossier
Registration Dossier
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EC number: 430-500-8 | CAS number: 204277-61-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Determination of the acute toxicity of FAT 41024/B to Scenedesmus subspicatus (growth inhibition test).
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 1.5 mg/L
Additional information
The test item FAT 41024/B had clearly no inhibitory effect on the growth of Scenedesmus subspicatus during the exposure period of 72 hours at the total mean measured concentration of 1.5 mg/l. Thus, this test concentration was determined as the 72-hour NOEC (highest concentration tested without toxic effects after a test period of 72 hours). The 72-hour LOEC (lowest concentration tested with toxic effects), respectively the 72-hour EC 50 for the algal biomass b and the growth rate u could not be quantified due to the absence of a toxic effect of FAT 41024/B up to the highest tested concentration. However, these parameters were clearly higher than 1.5 mg/l, and thus above the water solubility limit of the test item determined within this test.
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