Registration Dossier
Registration Dossier
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EC number: 224-169-7 | CAS number: 4223-03-4
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The 72h-ErC50 and 72h-NOErC are > 100 and 4.27 mg/l respectively in a OECD guideline 201 test with Selenastrum capricornutum under GLP (reliability 2).
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 4.27 mg/L
Additional information
Green algae (Selenastrum capricornutum) were exposed to CASnr 4223-03-4 for 72 hours under static conditions. Nominal concentrations were 0, 0.0827, 0.182, 0.401, 0.882, 1.94, 4.27, 9.39, 20.7, 45.5 and 100 mg/L. Measured concentrations were within
93 – 100 % of nominal but values were not given.
72h EC50 (biomass) = 10.1 mg/L
72h EC50 (growth rate) > 100 mg/L
72h NOEC (growth rate) = 4.26 mg/l
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