Registration Dossier
Registration Dossier
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EC number: 216-885-3 | CAS number: 1689-99-2
Toxicity to aquatic plants other than algae
Administrative data
Link to relevant study record(s)
Description of key information
From supportive studies, the 14-d EC50 for aquatic plants exposed to the present test material was > 0.073 mg a.i./L and 14 -d NOEC < 0.018 mg a.i./L in freshwater.
Key value for chemical safety assessment
- EC50 for freshwater plants:
- 0.073 mg/L
- EC10 or NOEC for freshwater plants:
- 0.018 mg/L
Additional information
Three GLP-studies are available for toxicity to aquatic plants other than algae and all of them were suitable for supporting purpose.
In the first supporting study (1998), the acute toxicity of test material to Lemna gibba was determined in a 14-day semi-static test according to EPA OPP 122-2 and 123-2 guidelines. The 14-day ER50 and NOEC of the test substance were determined to be > 0.073 mg a.i./L and 0.025 mg a.i./L, respectively, based on the mean initial measured concentrations.
In the second supporting study (1992), the acute toxicity of test material to Lemna gibba was determined in a 14-day semi-static test according to EPA OPP 122-2 and 123-2 guidelines. The 14-day ER50 and NOEC of the test substance were determined to be > 0.091 mg a.i./L and < 0.018 mg a.i./L, based on the mean measured concentration, respectively.
In the third supporting study (2012), the acute toxicity of test material to Myriophyllum spicatum was determined in a 14-day static test according to OECD 239 guideline. The 14-day ER50 and NOEC of the test substance were determined to be > 0.405 mg a.i./L and 0.114 mg a.i./L, based on the mean measured initial concentration, respectively.
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