Registration Dossier
Registration Dossier
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EC number: 218-500-4 | CAS number: 2164-17-2
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Toxicity to aquatic algae: NOEC (biomass), 72h) = 0.0661 mg/l, NOEC (growth rate, 72h) = 0.134 mg/l, EbC50 (biomass), 72 h) = 0.320 mg/l, ErC50 (average specific growth rate, 72h) = 0.920 mg/l for Pseudokirchneriella subcapitata (strain no. CCAP 278/4), Directive 92/69/EEC Method C3 ≡ OECD 201 (1984)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 0.32 mg/L
- EC10 or NOEC for freshwater algae:
- 0.066 mg/L
Additional information
Fluometuron is moderately toxic to green algae, the inhibition values for growth of Pseudokirchneriella subcapitata were:
Area under growth curve (biomass) EbC50 = 0.320 mg/L
Average specific growth rate ErC50 =0.920 mg/L
The NOEC for area under the growth curve (biomass) and growth rate were 0.0661 and 0.134 mg/L respectively.
No microscopic abnormalities of the cells were observed.
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