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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The substance exhibits an EC50 for freshwater invertebrates of 0.8 mg/L.

Key value for chemical safety assessment

EC50/LC50 for freshwater invertebrates:
0.8 mg/L

Additional information

One reliable study is available for the substance itself and is selected as key study. The toxicity of delta-3 -carene to freshwater Daphnia magna was studied according to OECD 202 and GLP. Daphnids were exposed to substance at nominal test concentrations of 1.0, 1.1, 1.3, 1.5, 1.7 and 2.0 mg/L over a test period of 48 hours.

Concentrations were analytically verified at the start and daily until the end of the test (old and new test media). The concentration of the test item was not satisfactorily maintained within ± 20% of the initial concentration throughout the test. Thus, the endpoint was based on the geometric means of the measured concentrations. The 48h-EC50 was determined to be 0.80 mg/L.

The 48h-EC50 is valid for key value for chemical safety assessment and is supported by QSAR results.