Registration Dossier
Registration Dossier
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EC number: 500-150-1 | CAS number: 61791-00-2 1 - 2.5 moles ethoxylated
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
EL50(72h) = 39.7 mg/L (loading rate, nominal) for growth rate inhibition of Pseudokirchneriella subcapitata (OECD 201)
EL10(72h) = 7.08 mg/L (loading rate, nominal) for growth rate inhibition of Pseudokirchneriella subcapitata (OECD 201)
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 39.7 mg/L
- EC10 or NOEC for freshwater algae:
- 7.08 mg/L
Additional information
One study investigating the toxicity of the test substance to freshwater algae is availbale. The study was performed according to GLP and OECD guideline 201 using Pseudokirchneriella subcapitata as test organism (Bak 2018). Loading rate WAFs ranging from 1.2 to 300 mg/L were tested. TOC analysis indicated the suitability of using nominal concentrations. The 72h-EL50 value is determined to be 39.7 and the 72h-EL10 value is determined to be 7.08 mg/L based on nominal concentrations.
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