Registration Dossier
Registration Dossier
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EC number: 428-040-8 | CAS number: 138261-41-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0 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:
- 0.125 mg/kg soil dw
- Assessment factor:
- 10
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Classification related key information
Biodegradation in water: Not readily biodegradable
Log Kow: 0.7 (OECD 117)
Acute toxicity:
- to Fish: LC50 (96h) = 161 mg/L (mean meas.) for Cyprinodon variegatus (EPA OPP 72-1)
- to aquatic invertebrates: EC50 (48h) = 85 mg/L (mean meas.) for Daphnia magna (EPA OPP 72-2)
- to algae: ECr50 (72h) > 100 mg/L (nominal) for Selenastrum capricornutum (OECD 201)
Chronic toxicity:
- to Fish: NOEC (31 d) was ≥ 9.02 mg/L (mean meas.) for Oncorhynchus mykiss (OECD 210)
- to aquatic invertebrates: NOEC (21d) = 1.8 mg/L (mean meas.) for Daphnia magna (EPA OPP 72-4)
- to Algae: NOEC (72h) <100 mg/L (nominal) for Selenastrum capricornutum (OECD 201)
Classification justification according to CLP
According to the data listed above Imidacloprid is not rapidly biodegradable and has a low potential to bioaccumulate (log Kow: 0.7). All available acute and chronic effect concentrations are > 1 mg/L. Based on the available data substance would not need to be classified and labelled as environmentally hazardous. However, Imidacloprid is listed on Annex VI to CLP_ATP13 (in force from 1 May 2020). The harmonised classification and labelling is Aquatic Acute 1 and Aquatic Chronic 1 according to Annex VI to CLP.
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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