Registration Dossier
Registration Dossier
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EC number: 217-440-6 | CAS number: 1852-04-6
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Under the conditions of the study the 72 hours EL50 was interpolated to 38.7 mg/l WAF.
Key value for chemical safety assessment
Additional information
The toxicity to aquatic organisms of the test substance was evaluated according to ISO 10253 (Water quality - Marine Algal Growth Inhibition Test with Skeletonema costatum and Phaeodactylum tricornutum). The test acceptance criteria given are fulfilled. The control cell density increased by a factor of more than 76 in the test period (corresponding to a growth rate of more than 0.9 d-1). The variation coefficient of the control specific growth rates did not exceed 7 %. The blank pH did not vary by more than 1.0 units during the test and the 72 hours test results with 3.5-dichlorophenol was in the range normally found.
Under the conditions of the study the 72 hours EL50 was interpolated to 38.7 mg/l WAF. The72 hours NOEC (No Observed Effect Concentration) the highest concentration without significant growth inhibition was 3.0m g/l WAF.
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