Registration Dossier
Registration Dossier
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EC number: 941-793-1 | CAS number: 32199-97-6
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
WoE based on two pieces of information:
1. The tested analog substance 2-Propyn-1-ol, compd. with methyloxirane (38172-91-7), which structurally differs from the registered substance 2-Propyn-1-ol, compd. with oxirane by a methy side group in the oxirane chain, is almost not toxic to algae.
2. Based on an well established QSAR programm the most toxic component (mono-ethoxylate) of the registered substance 2-Propyn-1-ol, compd. with oxirane is not toxic to algae.
Conclusion: taken together there is strong evidence that the registered substance is almost not toxic for algae.
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 101 mg/L
- EC50 for marine water algae:
- 10.1 mg/L
- EC10 or NOEC for freshwater algae:
- 0.1 mg/L
- EC10 or NOEC for marine water algae:
- 0.01 mg/L
Additional information
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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