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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

NOEC: 11 mg/L

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
11 mg/L

Additional information

No aquatic toxicity studies with chronic exposure are available on the registered substance itself. Reliable data on fish are available for two structural analogues of the substance, MTHPA and phthalic anhydride, with determined NOEC values of 100 and 10 mg/L, respectively. The lower NOEC value of 10 mg/L determined for phthalic anhydride was used as suitable read-across value for 4-MHHPA considering a worst case approach. The NOEC from this study was 10 mg/L which, when corrected for differences in molecular weight, results in a calculated NOEC of 11 mg/L for 4 -MHHPA.