Registration Dossier
Registration Dossier
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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.
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