Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.011 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:
0.022 mg/kg soil dw

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
40 mg/kg food
Assessment factor:
90

Additional information

As no long term aquatic toxicity data was available, all PNECaqua values (freshwater, marine and intermittent releases) were calculated using the lowest available EC50 from the acute aquatic toxicity data performed on the three relevant trophic levels. The lowest EC50, 0.61 mg/L, was derived from the key acute algal toxicity study. The appropriate PNECs were derived using the relevant assessment factors listed in Guidance on Information Requirements and Chemical Safety Assessment Chapter R.10.

The PNECstp value was based upon the NOEC derived from the key ready biodegradability study. The study was performed using a fresh culture of activated sludge from a biological waste water treatment plant treating predominantly domestic sewage and is therefore considered to be directly comparable to environmental effects.

Conclusion on classification

In accordance with Regulation EC 1272/2008, the substance requires classification as Aquatic Acute 1 (H400: Very toxic to aquatic life) on the basis of the EC50 of 0.61 mg/L from the acute algal toxicity study.