Registration Dossier
Registration Dossier
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EC number: 203-875-9 | CAS number: 111-49-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
EC10 (72h, growth rate): 24 mg/L;
EC50 (72h, growth rate): 88 mg/L;
NOEC (72h, biomass and growth rate): 10 mg/L
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 88 mg/L
- EC10 or NOEC for freshwater algae:
- 24 mg/L
Additional information
In a 72 hour inhibition test with freshwater algae (Selenastrum capricornutum), the test item reduced total cell growth and growth rate significantly at 22 mg/L and higher:
EC10 (72h, growth rate): 24 mg/L;
EC50 (72h, growth rate): 88 mg/L;
NOEC (72h, biomass and growth rate): 10 mg/L
The test was performed according to ISO International Standard 8692, 2004. In addition, the procedures were designed to meet the test methods and validity criteria of the EEC directive 92/69, Part C.3, 1992 and the OECD guideline No. 201, 1984. Test item concentrations were analytically verified and in agreement with nominal concentrations.
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