Registration Dossier

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.