Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 911-369-0 | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.18 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.018 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 5.3 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 8.15 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.815 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 5.6 mg/kg soil dw
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
Conclusion on classification
The short-term LC50 or EC50 values were 15.8, 25 and 6.7 mg/l, for fish, daphnia and algae, respectively, so between 1 and 10 mg/l. Cyclacet does not meet the criteria for readily/rapidly biodegradable. It can be concluded that the substance does not need to be classified as Aquatic Acute toxic according to EU CLP (EC 1272/2008 and its amendments).
Chronic toxicity data are available for algae on the substance itself and for fish and invertebrates via read-across from the structurally similar substance Cyclaprop. The lowest NOEC / EC10 from these chronic tests is a 21d-NOEC of 1.8 mg/L for Daphnia. Therefore, based on the available chronic data in combination with its non-rapidly degradability, Cyclacet does not need to be classified for long-term hazards to the environment according to EU CLP (EC 1272/2008 and its amendments) as the NOEC/EC10 values are above 1 mg/L.
For GHS: The acute toxicity of 6.7 mg/l for Cyclacet results in Acute Cat. 2 (H401).
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
