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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The ERV is 35.19 µg Pd L-1, and this is compared against the TD results for this substance. 

Key value for chemical safety assessment

Additional information

Classification of poorly soluble metal substances is conducted by comparing the results from 7 and 28-day TD tests against acute and chronic environmental reference values (ERVs). For palladium substances the ERVs are based on ecotoxicity data for diamminedichloropalladium, as the most toxic palladium substance. Environmental classification is determined by comparing the ecotoxicity results for diamminedichloropalladium against the TD test results for the substance. The EC50 for Daphnia magna determined for diamminedichloropalladium is 35.19 µg Pd L-1 (Schlechtriem 2012). The result was determined in a study following OECD guideline 202, with five test concentrations. Test solutions were analysed by ICP-MS and the results based on mean measured concentrations.