Registration Dossier
Registration Dossier
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EC number: 202-476-7 | CAS number: 96-09-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.007 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 5.4 mg/kg sediment dw
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.54 mg/kg sediment dw
Hazard for air
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
Hazard for predators
Additional information
Results from acute tests with fish, Daphnia and algae are available. No long-term studies were performed. The lowest short-term aquatic toxicity test result is the fish (Cyprinus carpio) EC50 (96 h) = 6.9 mg/L (Acute toxicity test). As there are no long-term data available and the substance is rapidly degradable and the log Kow ≥ 4 (Styrene oxide has an n-octanol/water partition coefficient log Kow of 1.61 according to the peer-reviewed handbook) the substance is not to be classified as hazardous to the aquatic environment.
Conclusion on classification
According to Directive 67/548/EEC as well as GHS Regulation EC No. 1272/2008 styrene oxide is not classified as hazardous to the environment.
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