Registration Dossier
Registration Dossier
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EC number: 205-592-6 | CAS number: 143-22-6
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Selenastrum capricornutum: EC50 (72hr), growth rate: 840mg/L, EC10 (72hr), growth rate: 190mg/L
Scenedesmus subspicatus: EC10 (72hr), growth rate: 612mg/L.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 840 mg/L
- EC10 or NOEC for freshwater algae:
- 190 mg/L
Additional information
In a guideline study for which full experimental details are available, the 72hr EC50 of 2-(2-(2-butoxyethoxy)ethoxy)ethanol in Selenastrum capricornutum was established to be 840mg/l based on growth rate inhibition. A NOEC of 100mg/l was established and the EC10 based on growth rate was 190mg/l.
In a study for which key experimental details are available, the 72hr EC50 of 2-(2-(2-butoxyethoxy)ethoxy)ethanol in Scenedesmus subspicatus was established to be >612.6mg/l, the maximum dose tested. A NOEC of 62.5mg/l was established and the EC10 based on growth rate was 612.6mg/l.
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