Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
7.3 µg/L
Assessment factor:
1 000
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
73 µg/L

Marine water

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

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
100 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor

Sediment (freshwater)

Hazard assessment conclusion:
PNEC sediment (freshwater)
PNEC value:
8.2 µg/kg sediment dw
Assessment factor:
500
Extrapolation method:
assessment factor

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.82 µg/kg sediment dw
Assessment factor:
5 000
Extrapolation method:
assessment factor

Hazard for air

Air

Hazard assessment conclusion:
no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
1 mg/kg soil dw
Assessment factor:
1 000
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Toxicity to microorganisms was determined to be LC50 > 1000 mg/l. The LC50 for Daphia as the most sensitive species was determined as 7.3 mg/l. Based on these values, the PNEC were derived using default assment factors.

PNECs for sediment in fresh and marine water were based on the available NOEC data from algae and daphnia, using a further factor 10 in addition to the default assessment factors, because no long-term studies are available.

Conclusion on classification

acute aquatic toxicity data show LC50/EC50 levels between 10 and 100 mg/l for all three trophic levels. There is also no indication of ready biodegradation in water. The available data justify a classification as chronic 2 (R51/53 respectively).