Registration Dossier

Administrative data

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:
PNEC aqua (freshwater)
PNEC value:
0.115 mg/L
Assessment factor:
50
Extrapolation method:
assessment factor
PNEC freshwater (intermittent releases):
0.208 mg/L

Marine water

Hazard assessment conclusion:
PNEC aqua (marine water)
PNEC value:
0.011 mg/L
Assessment factor:
500
Extrapolation method:
assessment factor

STP

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

Sediment (freshwater)

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

Sediment (marine water)

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

Hazard for air

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:
PNEC soil
PNEC value:
0.344 mg/kg soil dw
Extrapolation method:
equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:
PNEC oral
PNEC value:
13.8 mg/kg food
Assessment factor:
30

Additional information

For fish the lowest 96-h LC50 from validated data is 28.3 mg/l in freshwater fish (Jordanella floridae) and 16 mg/l found in marine fish (Limanda limanda).  The 48-h IC50 for Daphnia magna is 20.8 mg/l, the lowest marine is a 96-h LC50 of 14 mg/l in Americamysis bahia. For freshwater algae the lowest toxicity value is a 72h EC50 of 36.5 mg/l and a EC10 of 12.3 mg/l in Chlamydomonas reinhardtii.  In addition, a 10-day NOEC of 5.76 mg/l is reported for fry of Jordanella floridae. No chronic study is available for invertebrates.  The 3-h EC50 in activated sludge is 260 mg/l.

Conclusion on classification

Initial EU Hazard Classification

Based on available experimental ecotoxicological data for daphnids, fish and algae, trichloroethylene is currently labelled as R52/53 (Harmful to aquatic organisms and may cause long-term adverse effects in the aquatic environment), since the lowest L(E)C50 value is between 10 and 100 mg/l and because trichloroethylene is not readily biodegradable. Because the chronic NOEC in fish of 5.76 mg/l indicates that chronic toxicity is absent, trichloroethylene needs not to be classified. However, the persistence of trichloroethylene should somehow be reflected and as R53 cannot be used by itself in the current case, from a pragmatic point of view it was decided to classify as R52/53 (GHS Aquatic Chronic 3; H412).