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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The lethal concentration (LC50) value of tert-butyl-4-methoxyphenol in Dreissena polymorpha in a 48 hr study on the effect basis of mortality was found to be 65(48-88) mg/L. But the BCF value of tert-butyl-4-methoxyphenol reported were not >= 500 as well as the substance is found to be rapidly degradable thus considering the conditions mentioned in the CLP regulation for classification the substance can be assumed to be non toxic. 

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
65 mg/L

Additional information

Supporting study of tert-butyl-4-methoxyphenol also indicates that the test substance does not exhibit short term toxicity to aquatic invertebrate as per the C & L criteria set by EU.