Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.001 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 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

Short-term toxicity of the test substance to freshwater fish, invertebrates and algae have been determined experimentally. Aquatic invertebrates (Daphnia magna) immobilisation proved to be the most sensitive indicator of toxicity and hence the 48hour EC50 value for Daphnia magna was used as a critical indicator for calculation of PNEC values for aquatic organisms. The PNEC for STP microbes was calculated from an activated sludge respiration inhibition test (ASRIT) in activated sludge. No studies are available to assess the toxicity to sediment or terrestrial species. As such, the relevant sediment and soil PNEC values have been calculated using the equilibrium partitioning method.

Conclusion on classification

Based on the EC50 result in the 48h freshwater Daphnia magna toxicity test (1.7 mg/L) and the absence of degradation reported in tests of ready biodegradability, the classification of the test substance is concluded to be:

- under Regulation 1272/2008 (CLP GHS) criteria, hazardous to the aquatic environment, chronic category 2 (H411).