Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.12 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:
0.14 mg/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

Conclusions on Classification:

In the absence of adequate chronic aquatic toxicity information from all three trophic levels, the classification was based on the lowest of the short-term aquatic toxicity values from the three trophic levels (48-h EC50 = 0.81 mg/L in daphnids). Although the substance was not shown to be readily biodegradable (70% degradation in 28 days, exceeding the threshold of 60% degradation but failing the 10-day window), the substance exhibited substantial mineralisation and rapid degradation, and therefore is not considered to be persistent in the environment. The experimentally-determined bioconcentration factor (BCF = 92 L/kg ww) is below the threshold for classification as a chronic aquatic hazard (BCF ≥ 500). Therefore, the substance was assigned a classification of Category Acute 1 for hazards to the aquatic environment, with an M-factor of 1. The substance was not assigned a chronic classification for hazards to the aquatic environment.