Registration Dossier
Registration Dossier
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EC number: 208-654-0 | CAS number: 537-00-8
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.003 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 9.87 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 38.2 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 3.82 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:
- 1.01 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 73.3 mg/kg food
- Assessment factor:
- 90
Additional information
Conclusion on classification
Based on the results of a 96-hour toxicity to rainbow trout study the LC50 of a similar substance was determined to be 0.44 mg/L (mean measured concentration) based on test material, 0.30 mg/L (mean measured concentration) based on Ce(NO3)3, and 0.13 mg/L based on elemental Ce in the test medium.
Performing a molecular weight correction, the 96 -hour LC50 is 0.29 mg/L based on the substance cerium acetate.
Based on the results of the above study and the physico-chemical properties of the substance, according to CLP classification criteria the substance is classified Aquatic Acute Category 1 and Aquatic Chronic Category 1 – H410 Very toxic to aquatic life with long lasting effects – M factor = 1
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