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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Link to relevant study record(s)

Description of key information

The 72 hour EC50 value of tert-butyl-4-methoxyphenol in green algae (Pseudokirchneriella subcapitata) was found to be 5.2 mg/L (ppm).  But the BCF value of tert-butyl-4-methoxyphenol reported was not >= 500 as well as the substance was found to be rapidly degradable. Thus considering the CLP criteria for aquatic classification of the substance, it can be assumed to be in the classification of aquatic chronic 2 category as per the CLP regulation.

Key value for chemical safety assessment

EC50 for freshwater algae:
5.2 mg/L

Additional information