Registration Dossier
Registration Dossier
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EC number: 939-455-3 | CAS number: 1469983-49-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 7.5 µg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 26.6 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.75 µg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 2.66 µg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.124 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 12.4 µg/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:
- 20.4 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
SUMMARY OF AVAILABLE DATA (key values)
Acute toxicity to aquatic organisms (pelagic):
- Fish (Brachydanio rerio): 96h-LC50 = 2.66 mg active content/L (as a LC50 value expressed in solid content was not reported, the LC50 value expressed in active content was used as a worst-case for the assessment);
- Crustaceans (Acartia tonsa): 48h-EC50 = 6.62 mg solid content/L;
- Algae (Skeletonema costatum): 72h-EC50 = 2.69 mg solid content/L.
Chronic toxicity to aquatic organisms (pelagic):
- Fish (Pimephales promelas): 32d-EC10 = 0.075 mg solid content/L;
- Crustaceans (Daphnia magna): 21d-NOEC = 1.39 mg solid content/L;
- Algae (Skeletonema costatum): 72h-NOEC = 0.9 mg solid content/L.
Environmental fate:
- Rapidly degradable in the environment (readily biodegradable in a 28-day ready biodegradation test);
- Low bioaccumulation potential (based on log Kow < 4)
All effective concentration are expressed in solid content and are relevant for the REACh-registered substance (= active content + minor constituents + impurities).
According to the CLP hazard classification criteria, the substance EC 939-455-3 does not have to be classified for acute environmental hazard but has to be classified as Aquatic Chronic 2 (H411) - Toxic to aquatic life with long lasting effects.
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