Registration Dossier
Registration Dossier
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EC number: 800-484-0 | CAS number: 154518-38-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 6.31 µg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 63.1 µg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.631 µg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 113 µg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 11.3 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:
- 18.8 µg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
- no potential for global warming is expected according to the vapour pressure of <0.05 Pa and the molecular weight.
- no potential for the depletion of the ozonic layer, as the molecule doesn't contain halogens
Three short-term test results (LC50) from each of three trophic levels (fish, daphnia, algae) are available. The lowest value is the 48 -h-LC50 for daphnia with 6.31 mg/L. This value is used for assessment. Tests were made with the Potassium salt (daphnia, algae) respective the Sodium salt (fish) of the registration substance. The justification for this read-across approach is documented within the corresponding endpoint summaries.
The toxicity to microorganisms was tested during a test on readily biodegradability. The respiration of sewage sludge with an reference substance was not inhibited at a registration substance concentration of 100 mg/L.
No hazard to air is identified:
PNEC values for sediment and soil were calculated with EUSES (equlibrium partitioning method), based on phys.-chem., fate and ecotoxicology data.
Conclusion on classification
The lowes acute EC50 value (daphnia) is in the range 1 -10 mg/L. There are no longterm data on ecotoxicology available. Following test results on biodegradation, no fast degradation was determined. No fast hydrolysis is expected.
Resulting classification:
Hazardous to the aquatic environment, category chronic 2.
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