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Short-term toxicity to aquatic invertebrates

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Read-across to the assessment entities soluble zinc substances and toluic acid is applied for the assessment of zinc toluate since the ions of zinc toluate determine its fate and toxicity in the environment. Reliable data available for soluble zinc substances and toluate indicate that the moiety of ecotoloxicological concern are zinc cations. The lowest reliable 48h-EC50 values at different solution pH and hardness range for Ceriodaphnia dubia from 0.147 to >0.53 mg Zn/L whereasa 48-h EC50 of 75 mg/L was derived for m-toluic acid.

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