Registration Dossier
Registration Dossier
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EC number: 223-054-9 | CAS number: 3710-30-3
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.001 mg/L
- Assessment factor:
- 1 000
- PNEC freshwater (intermittent releases):
- 0.007 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0 mg/L
- Assessment factor:
- 10 000
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 10 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.031 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.003 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:
- 0.006 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- insufficient hazard data available (further information necessary)
Additional information
Conclusion on classification
Classification related key information
Biodegradation in water: screening test: 53% (O2-consumption) in 28 days (ISO Draft – BOD Test for Insoluble Substances)
QSAR (BIOWIN v.4.00) = readily biodegradable
Log Kow: 4.00 (KOWWIN v.1.67)
Acute toxicity:
- to Fish: LC50 (96 h) = 1.27 – 2.68 mg/L based on QSAR calculations
- to Aquatic invertebrates: L(E)C50 (48 h) = 0.91 - 2.15 mg/L based on QSAR-calculations
- to Algae: ErC50 (72 h / 96 h) = 0.66; ErC50 (96 h) = 1.27 mg/L based on QSAR-calculations
Chronic toxicity:
- to Fish: not available
- to Aquatic invertebrates: not available
- to Algae: not available
Classification justification according to CLP
Based on the data above, 1,7 -octadiene is considered to have moderate potential for bioaccumulation (cut-off value for log Pow = 4.0) and is rapidly degradable. The acute aquatic toxicity L(E)C50 is < 1 mg/L for algae. Valid chronic aquatic toxicity data are not available. 1,7 -octadiene has been classified and labelled as environmental hazard Acute Cat. 1 and Chronic Cat. 1 according to the Regulation (EC) No.1272/2008 (CLP) and the Regulation (EU) No. 286/2011 (2ndATP).
M-factor for acute aquatic toxicity: not need to be assigned
M-factor for chronic aquatic toxicity: not possible due to absence of chronic data
Classification justification according to DSD
Based on the data above, 1,7 -octadiene is considered to have a moderate potential for bioaccumulation (cut-off value for log Pow = 3.0) but is rapidly degradable. The acute aquatic toxicity L(E)C50 is < 1 mg/L for algae. Therefore 1,7 -octadiene has been classified and labelled as environmental hazard R50/53 according to the Directive 67/548/EEC.
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