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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Acute Daphnia immobilisation: LC50 = >100 mg/l; NOEC = 100 mg/L.  

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
100 mg/L

Additional information

Acute immobilisation to Daphnia magna has been investigated according to OECD/EU test methods and a limit concentration 100 mg/L 4-MHHPA. Due to the fast degradation of the test substance, the degradation product, Hexahydro - 4 Methylphthalic Acid was analysed. No effects as a result of exposure were observed.