Registration Dossier

Diss Factsheets

Administrative data

Hazard for aquatic organisms

Freshwater

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

Marine water

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

STP

Hazard assessment conclusion:
PNEC STP
PNEC value:
651 mg/L
Assessment factor:
1
Extrapolation method:
assessment factor

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.08 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:
0.105 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

The environmental classification of the test substance is currently not harmonized according to the CLP Regulation (EC) 1272/2008 and the Dangerous Substance Directive 67/548/EC.

Based on available acute toxicity data, the lowest valid effect concentration (LC50) for freshwater aquatic organisms is 94.6 mg/L. Long-term studies are not available. A biodegradation study was performed equivalent to OECD guideline 301C under GLP conditions (Huntsman, 2008). Only 5.6% degradation was observed with the test substance after 28 days (DOC removal). The results support the conclusion that the biodegradation of the test substance is slow. Therefore, the test substance is considered not readily biodegradable. Adaptation of the micro-organisms is an important proces for the degradation rate of the test substance in the environment. Results from an OECD 301B study (BASF, 1996) indicate that the test substance shows enhanced biodegradability but under acclimated conditions. Based on the results of this study the test substance is considered to be a non-persistent substance.

Based on all the information above, the substance is classified as Aquatic Chronic 3 according to Annex 1 (section 4.1.2.6) of the CLP Regulation.

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