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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: - | CAS number: -
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.22 mg/L
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.022 mg/L
- Assessment factor:
- 500
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.1 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 4 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.889 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.089 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:
- 10 mg/kg soil dw
- Assessment factor:
- 50
- Extrapolation method:
- assessment factor
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Justification for classification
Degradation
Biodegradation: not readily biodegradable: 0% based on DOC removal (OECD 301 A ; read-across)
Bioaccumulation
Partition coefficient: log Pow < -2.5 at 20 °C, pH = 6
Aquatic acute toxicity
Fish (Oncorhynchus mykiss): LC50 (96 h) > 100 mg/L (read-across)
Aquatic invertebrates (Daphnia magna): EC50 (48 h) > 100 mg/L (read-across)
Aquatic algae (Pseudokirchneriella subcapitata): ErC50 (72 h) > 100 mg/L (read-across)
Aquatic chronic toxicity
Fish: no data available
Aquatic invertebrates (Daphnia magna): NOEC (21 d) 11.1 mg/L (read-across)
Aquatic algae (Pseudokirchneriella subcapitata): NOErC (72 h) >= 100 mg/L (read-across)
Conclusion on classification
The substance is not readily biodegradable. The available read across data indicate no acute aquatic toxicity. All L(E)C50 values are > 100 mg/L (fish, aquatic invertebrates and algae). Valid read-across data on chronic toxicity are available for algae and aquatic invertebrates. The determined NOEC values are clearly above 1 mg/L. Therefore, Reaction mass of dipotassium 2-(3,4-dimethyl-1H-pyrazol-1-yl) succinate and dipotassium 2-(4,5-dimethy-1H-pyrazol-1-yl) succinate does not meet the criteria for classification and labelling for acute or chronic toxicity according to the consolidated version of the Regulation (EC) No. 1272/2008 (CLP) and further amendments.
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.
