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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

The 28-day NOEC value is 0.51 mg/l for reproductive effects tested in the freshwater species Daphnia magna.

Key value for chemical safety assessment

EC10, LC10 or NOEC for freshwater invertebrates:
0.51 mg/L

Additional information

Few long-term toxicity tests have been carried out to study the toxicity of tetrachloroethylene to invertebrates of which the outcomes are in the same order of magnitude.

A 28-day NOEC based upon reproduction of 0.51 mg/l is reported for Daphnia magna (Richter et al., 1983). The test concentrations are measured, the test conditions are fully described and so the result is considered as valid. A lower value of 0.45 mg/l is reported for Mysidopsis bahia (USEPA, 1980); no indication is given as to the test conditions and the result is therefore not considered useful for risk assessment. Another study was less critical.