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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

After 48h a NEC of 3.7 mg/l and a EC50 of 7.3 mg/l were determined.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
7.3 mg/L

Additional information

Twenty daphnia magna each were exposted to norbornene in 6 concentrations ranging from nominally 2.2 to 100 mg/l in test according to OECD 202 resp. EU C.2. From the experiment after 48h an EC50 value of 7.3 mg/l and a NOEC of 3.7 mg/l could be determined. the concentrations are based on the geometrical mean of the concentrations determined before and after the tests in each treatment.