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Short-term toxicity to aquatic invertebrates

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For 3,5 -dichlorophenyl isocyanate no short-term tests on toxicity to invertebrates are available. Therefore, the short-term toxicity test of the main hydrolysis product 3,5 -dichloroaniline with the lowest value is used to draw a conclusion on toxicity to invertebrates for the parent compound. The acute toxicity of 3,5-dichloroaniline, the main hydrolysis product of 3,5-dichlorophenyl isocyanate, was assessed following a national standard method for the determination of toxicity to invertebrates. For Daphnia magna, a LC50 of 1.12 mg/l after 48 hours of exposure was obtained (Maas-Diepeveen, 1986).

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