Registration Dossier
Registration Dossier
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EC number: 242-560-0 | CAS number: 18765-38-3
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Toxicity to aquatic algae studies conducted with 2-butoxyethanol report a 72 h EC50 of 911 mg/L and a 72 h NOEC value of 286 mg/L for Pseudokirchneriella subcapitata (EU RAR for CAS 111-76-2, 2006).
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 911 mg/L
- EC10 or NOEC for freshwater algae:
- 286 mg/L
Additional information
In view of the rapid hydrolysis of the registered substance to silicic acid and 2-butoxyethanol and the absence of toxicity to aquatic organisms of silicic acid, the PNECaquatic(freshwater) will be based on data for 2-butoxyethanol.
Toxicity to aquatic algae studies conducted with 2-butoxyethanol report a 72 h EC50 of 911 mg/L and a 72 h NOEC value of 286 mg/L for Pseudokirchneriella subcapitata.
EU RAR (2006): European Union Risk Assessment Report, 2-butoxyethanol CAS No.: 111-76-2, Volume 68, 2006.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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