Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
30.3 µg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
6.8 µg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
3.04 µg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
9.7 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
0.214 mg/kg sediment dw
Extrapolation method:
equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.021 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:
0.025 µg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
0.5 mg/kg food
Assessment factor:
300

Additional information

Conclusion on classification

The environmental classification of C12 -C18 AAAO is currently not harmonized according to the CLP Regulation (EC) 1272/2008 and the Dangerous Substance Directive 67/548/EC.

Based on available acute toxicity data, the lowest valid effect concentration for freshwater aquatic organisms is 0.68 mg/L (LC50 value for fish).

The substance is readily biodegradable (but failing the 10-day window); its logKow is < 4. Based on available data the substance should be classified for Acute toxicity (Acute 1). From the acute data, fish and algae appear to be the most sensitive species. As the NOEC for algae is < 1 mg/L (0.303 mg/L; long-term studies are available for the structural analogue C12 -C14 AO) the substance should be classified for chronic toxicity, following section 4.1.2.6, table 4.1.0 b (iii) of the CLP Regulation (Aquatic Chronic 3). Based on the same criteria the substance should be classified with R50 (Very toxic to aquatic organisms) under the Dangerous Substance Directive 67/548/EC (see Annex VI section 5.2.1.2) as the DSD does not consider algae data for showing the absence of chronic toxicity.