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Three acute toxicity studies available for EEH that included a 96 -hr study with rainbow trout, a 48 -hr exposure with Daphnia magna and a 72 -hr study with the green alga, Pseudokirchneriella subcapitata. The reported endpoints were an LC50 or 67.3 mg/L for fish, an EC50 of 45.5 mg/L for daphnids and a value of 72.9 mg/L for growth inhibition of P. subcapitata. The invertebrate, D. magna was the most sensitive species.

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