Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.045 mg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.45 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.004 mg/L
Assessment factor:
10 000
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.022 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:
0.018 mg/kg soil dw

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

The PNEC for waste-water treatment is 3 mg/L based on the IC50 of 300 mg/L obtained in the activated sludge respiration inhibition test and an assessment factor of 100. No long-term studies on aquatic organisms are available and thus PNECs for aqueous environment were derived by the assessment method based on acute aquatic toxicity data. PNECs for sediment and soil were derived by applying the partitioning method. The substance has a low potential for bioaccumulation and its hazards for predators via the food chain are not anticipated.

Conclusion on classification

The substance was tested for three trophic levels in the aquatic environment using acute test design and the most sensitive species was Fish showing a LC50 of 45 mg/L. The substance is considered non-biodegradable. Based on these results, the substance will not be classified for chronic or acute aquatic toxicity hazards for CLP.