Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
23.3 µg/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:
45.8 µg/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

Environmental classification and labelling of a substance is generally based on data from short-term aquatic toxicity results, the ready biodegradability of the substance and an experimentally determined BCF (or if absent the measured octanol/water partition coefficient). Available adequate chronic toxicity data is also relevant for the assessment of long-term aquatic hazards (Regulation 286/2011/EC).

Short-term aquatic toxicity data is available for all three trophic levels (daphnia, algae and fish). Based on the geometric mean measured concentration, the fish 96-hour LC50 was 11.3 mg/L, the daphnia 48-hour EC50 was 4.71mg/L and the algae 72-hour ErC50=1.44mg/L (based on growth rate).

The lowest short-term L(E)C50 is for Algae (72-hour ErC50 is 1.44 mg/l). Since the EC50 is > 1mg/L the substance is not classified for short-term hazards to the aquatic environment according to the CLP Regulation 1272/2008/EC.

 

Chronic aquatic toxicity data is only available for one trophic level (algae). Therefore, the long-term hazard has been assessed based on both:

a) The chronic aquatic toxicity data for algae (ErC10 = 1.16 mg/L) and ready biodegradability of the substance, which results in a non classification, and

b) The acute aquatic toxicity data for daphnia (EC50 = 4.71 mg/L) and fish (LC50 = 11.3 mg/L), and environmental fate data, which results in a non classification based on the fact that the substance is readily biodegradable and Log Pow < 4 (actual value = 3.8)

and classifying according to the most stringent outcome.

 

Thus it is concluded that the substance is not classified for the environment according to the CLP Regulation 1272/2008/EC & adaptation 286/2011/EC.