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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Acute toxicity to Fish: 96 hour LC50  - >100mg/L

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
100 mg/L

Additional information

In a 96-hour acute toxicity study, Medaka (Oryzias latipes) were exposed to tetrahydromethylphthalic anhydride (MTHPA), of which 3 -THPA D4 is an isomer, at a nominal limit concentration of 100 mg/L under flow through conditions. The EC50 and NOEC values, based on mortality/sublethal effects, were> 100 and = 100 mg/L, respectively. Sublethal effects were not observed in the groups exposed to 100 mg/L of tetrahydromethylphthalic anhydride.