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EC number: 422-940-4 | CAS number: -
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The influence of silatrizole on the growth of the green algal species Scenedesmus subspicatus CHODAT was investigated in a GLP-compliant 72-hour limit test conducted in accordance with EU Method C.3 and OECD Guideline 201. The only concentration tested was the undiluted filtrate of a supersaturated stock suspension prepared at a nominal loading rate of 100 mg test substance/l. Silatrizole had clearly no inhibitory effect on the growth of Scenedesmus subspicatus during the exposure period of 72 hours. Therefore, the 72-hour NOEC was determined to be at least 0.57 mg test substance/l (as the mean measured test substance concentration in the undiluted filtrate). The 72-hour LOEC, respectively the 72-hour EC50, for the algal biomass b and the growth rate µ could not be quantified due to the absence of toxicity up to the highest tested concentration. However, these parameters were clearly higher than 0.57 mg test substance/l.
Key value for chemical safety assessment
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