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Ecotoxicological information

Ecotoxicological Summary

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Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.051 mg/L
Assessment factor:
10
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.036 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.005 mg/L
Assessment factor:
100
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

Hazard assessment conclusion:
PNEC sediment (marine water)
PNEC value:
0.09 mg/kg sediment dw
Extrapolation method:
assessment factor

Hazard for air

Air

Hazard assessment conclusion:
PNEC air
PNEC value:
8.2 µg/m³

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.01 mg/kg soil dw
Assessment factor:
10
Extrapolation method:
assessment factor

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
no potential for bioaccumulation

Additional information

For fresh water fish the lowest LC50 from validated data is 5 mg/l (Oncorhynchus mykiss), for invertebrates the lowest EC50 from validated data is 8.5 mg/l (Daphnia magna) and for algae the lowest EC50 from validated data is 3.64 mg/l (Chlamydomonas reinhardtii). For marine water fish the lowest LC50 from validated data is 5 mg/l (Limanda limanda) In addition, for fish a 10-day NOEC of 1.99 mg/l is reported for fry of Jordanella floridae. For Daphnia a 28-day NOEC based upon reproduction of 0.51 mg/l is reported from validated sources. For fresh water algae a 72-hour EC10 of 1.77 mg/l is reported, and this is taken as a long-term NOEC value.

Various terrestrial toxicity data are reported for tetrachloroethylene. Long-term studies have been conducted with three trophic levels/species; invertebrates (Eisenia fetida),plants (e.g.Phaseolus vulagaris) and soil dwelling bacteria. The lowest NOEC reported is for nitrification in a loam soil with a NOEC of ≤ 0.1 mg/kg wet weight .

Conclusion on classification

Initial EU and GHS Hazard Classification

Based on available experimental ecotoxicological data for daphnids, fish and algae, tetrachloroethylene is currently classified as N, R51/53 (Toxic to aquatic organisms and may cause long-term adverse effects in the aquatic environment), since the lowest L(E)C50 value is between 1 and 10 mg/l and because tetrachloroethylene is not readily biodegradable (GHS Aquatic Chronic 2; H411).