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Ecotoxicological information

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Short-term ecotoxicity data for freshwater at three trophic levels are available. The EC50 and LC50 of the three trophic levels were always at or above the WAF (water accomodated fraction) due to the low water solubility of the test substance. The lowest WAF and thus the lowest EC50 of above 34 mg/L was determined within the growth inhibition study to algae. This enpoint was used to derive an appropriate aquatic PNEC value. The toxicity of the test substance to activated sludge was tested to be 1655 mg/L. This endpoint was used to derive the PNEC STP. The substance is not readily biodegradable but is degradation reached levels ranging from 24 to 50 % in several tests during an incubation period of 28 days.