Registration Dossier
Registration Dossier
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EC number: 203-891-6 | CAS number: 111-64-8
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- PNEC aqua (freshwater)
- PNEC value:
- 0.144 mg/L
- Assessment factor:
- 1 000
- Extrapolation method:
- assessment factor
- PNEC freshwater (intermittent releases):
- 1.44 mg/L
Marine water
- Hazard assessment conclusion:
- PNEC aqua (marine water)
- PNEC value:
- 0.014 mg/L
- Assessment factor:
- 10 000
- Extrapolation method:
- assessment factor
STP
- Hazard assessment conclusion:
- PNEC STP
- PNEC value:
- 100 mg/L
- Assessment factor:
- 1
- Extrapolation method:
- assessment factor
Sediment (freshwater)
- Hazard assessment conclusion:
- PNEC sediment (freshwater)
- PNEC value:
- 1.02 mg/kg sediment dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for air
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- PNEC soil
- PNEC value:
- 0.275 mg/kg soil dw
- Extrapolation method:
- equilibrium partitioning method
Hazard for predators
Additional information
Due to the rapid hydrolysis of the parent compound, the PNEC derivation is based on the results for the hydrolysis product octanoic acid (CAS 124 -07 -2).
Conclusion on classification
Following DSD/DPD, the substance is not to be classified as dangerous for the environment since the acute toxicity is > 100 mg/L. The substance is readily biodegradable. No experimentally determined BCF is available. The log Pow is equal to 3, but this value refers to the uncharged molecule.
However, octanoic acid has log D values ranging from 2.957 to -1.23 in a pH range from 4 to 9. Therefore, bioaccumulation is not expected in aquatic organisms.
Following GHS, the substance is not to be classified as hazardous to the aquatic environment since the acute toxicity is > 100 mg/L. Moreover, the substance is readily biodegradable and the log Pow is < 4 (no experimentally determined BCF).
Data from HCl have not been taken into consideration as observed effects are caused by a pH-shift in the test medium.
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