Registration Dossier
Registration Dossier
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EC number: 234-294-9 | CAS number: 11071-47-9
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
The 72-hour EC50 for Scenedesmus subspicatus was determined to be > 4.3 mg/L for both cell growth and growth rate. 4.3 mg/L was the highest concentration tested. The NOEC was determined to be 2.5 mg/L (based on growth rate).
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 4.3 mg/L
- EC10 or NOEC for freshwater algae:
- 2.5 mg/L
Additional information
Data obtained from a reliable proprietary report so can be considered reliable and suitable for use as the key study for this endpoint. According to the report's owners the substance di-n-butene can be classified as CAS 11071-47-9 (Isooctene). The 72-hour EC50 for Scenedesmus subspicatus was determined to be >4.3 mg/L for both cell growth and growth rate. 4.3 mg/L was the highest concentration tested. The NOEC was determined to be 2.5 mg/L (based on growth rate).
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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