Registration Dossier
Registration Dossier
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EC number: 273-227-8 | CAS number: 68953-84-4
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
1) Toxicity to algae (Selenastrum capricornutum) was evaluated by measuring the growth inhibition (72h) (K2) (OECD 201 & GLP); EC50 > 0.79 mg/L (growth rate); NOEC = 0.013 mg/L (growth rate)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 0.079 mg/L
- EC10 or NOEC for freshwater algae:
- 0.013 mg/L
Additional information
The available key study describing toxicity towards algae (Hoberg 1996) was performed according to the international guidelines. Based on the growth rate, the EC50 was determined to be above 0.079 mg/L while a NOEC = 0.013 mg/L was determined.
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