Registration Dossier
Registration Dossier
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EC number: 214-426-1 | CAS number: 1126-79-0
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.002 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.021 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):
- 0.002 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 0.511 mg/L
- Assessment factor:
- 10
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.126 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.013 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:
- 0.024 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- PNEC oral
- PNEC value:
- 0.667 mg/kg food
- Assessment factor:
- 300
Additional information
Conclusion on classification
The predicted and experimental EC/LC50 values for butyl phenyl ether ranged from 2.1 - 5.77 mg/L across all species and trophic levels. Biodegradation of the test material was evaluated according to the OECD Guideline 301D: Closed Bottle Test, and the results indicated that butyl phenyl ether was not readily biodegradable. The empirically derived log Kow of butyl phenyl ether was 4.26. Taken together, these results in a classification for the aquatic environment of Category Acute 2 and Category Chronic 2 for butyl phenyl ether.
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