Registration Dossier
Registration Dossier
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EC number: 204-677-5 | CAS number: 124-07-2
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.02 mg/L
- Assessment factor:
- 10
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 0.22 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.002 mg/L
- Assessment factor:
- 100
- Extrapolation method:
- assessment factor
- PNEC marine water (intermittent releases):
- 0.022 mg/L
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 912 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 0.295 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Sediment (marine water)
- Hazard assessment conclusion:
- PNEC sediment (marine water)
- PNEC value:
- 0.029 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:
- 0.047 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Classification related key information (based on current available information)
Degradation:
- Biodegradation: readily biodegradable: > 72% after 30 d (O2 consumption, OECD 301D)
Bioaccumulation:
- Log Pow = 3.05 (Hansch, 1995)
Aquatic acute toxicity:
- Fish: LC50 (96 h) = 22 mg/L (nominal, mortality of Lepomis macrochirus, EPA-method 1975)
- Aquatic invertebrates: EC50 (48 h) > 21 mg/L (meas. geom. mean, mobility of Daphnia magna, OECD 202); RA CAS 334-48-5
- Algae: EC50 (72 h) = 43.73 mg/L (meas., growth rate, OECD 201)
Aquatic chronic toxicity
- Fish: NOEC (28 d) = 6.4 mg/L (nominal, growth rate of Danio rerio, OECD 305 E); RA CAS 629-25-4
- Aquatic invertebrates: NOEC (21 d) = 0.2 mg/L (nominal, reproduction rate of Daphnia magna, OECD 211); RA CAS 334-48-5
- Algae: NOEC (72 h) = 17.52 mg/L (meas., growth rate, OECD 201)
Conclusion on classification
A harmonized classification towards environmental hazard was adopted for octanoic acid. According to the regulation (EC) No 1272/2008, Annex VI, Table 3.1 the substance is classified as hazardous to the aquatic environment, aquatic chronic 3: harmful to aquatic life with long lasting effects (H412). This corresponds with the available data presented in this dossier, a further self classification is not needed.
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