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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Good quality and relevant acute toxicity data are available for 29 invertebrate species. After checking and updating the data base, the data are normalized towards pH 6 and 8 and towards realistic worst-case conditions for DOC (2 mg/L) and a water hardness of 40 mg Ca/L. If several data points were available on a same species, the geomean of the normalized values was calculated and used for the analysis.

Key data (lowest geomean EC50 values) are: 
- pH 6: 0.154 mg Zn/L for Daphnia magna (0.345 mg Zn/L for Cerodaphnia dubia)
- pH 8: 0.095 mg Zn/L for Daphnia magna (0.182 mg Zn/L for Cerodaphnia dubia)

Key value for chemical safety assessment

Additional information