Registration Dossier
Registration Dossier
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EC number: 215-304-0 | CAS number: 1320-51-0
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 > 1000 and 1000 mg/L respectively in a OECD guideline 201 test with Selenastrum capricornutum under GLP (reliability 2, no specific chemical analysis).
Key value for chemical safety assessment
- EC10 or NOEC for freshwater algae:
- 1 000 mg/L
Additional information
The toxicity of (hydroxyethyl)urea to the Unicellular Green Alga, Selenastrum capricornutum, was evaluated according to OECD TG 201. The 72 -hour EbC50 and ErC50 values were estimated to be >1000 mg a.i. /L. The 72-hour NOEC was 1000 mg a.i. /L. All results were based on the nominal concentrations.
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