Registration Dossier
Registration Dossier
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EC number: 209-753-1 | CAS number: 592-41-6
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.111 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- sensitivity distribution
- PNEC freshwater (intermittent releases):
- 0.111 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.111 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- sensitivity distribution
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 19.25 mg/kg sediment dw
- Assessment factor:
- 1
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 19.25 mg/kg sediment dw
- Assessment factor:
- 1
- 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:
- 4.01 mg/kg soil dw
- Assessment factor:
- 1
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential to cause toxic effects if accumulated (in higher organisms) via the food chain
Additional information
Aquatic PNECs were derived using the equation that underlies the PETROTOX model and the soil and sediment PNECs were calculated using the equilibrium partitioning method.
Conclusion on classification
The lowest acute data point is a 48 hour EC50 of 4.4mg/L forDaphnia magnaread across from hexene. On the basis of this result hex-1-ene would be classified as “R51/R53 toxic to aquatic organisms and may cause long term adverse effects in the aquatic environment” under the DSD Directive, as although hex-1-ene is readily biodegradable it has a log Kow >3. However, hex-1-ene would not be classified under the EU CLP Regulations as it is readily biodegradable and has a log Kow <4.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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