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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Long-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

 the substance is considered not to have chronic toxicity to daphnids

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
1 mg/L

Additional information

A study on a close structural analogue (CAS 16090-02-1) is available in order to assess the chronic toxicity to aquatic invertebrates of the substance.

The NOEC of the tested substance on Daphnia magna according to OECD 202 was found to be 1 mg/L.

Therefore also the substance with CAS 133-66-4 is considered not to have chronic toxicity to daphnids.