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Ecotoxicological information

Long-term toxicity to aquatic invertebrates

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Description of key information

For dipotassium hexachloroplatinate, ecotoxicity data are read across from another platinum(IV) substance that also contains a chloro ligand, hexachloroplatinic acid. The NOEC is estimated to be 7.0 μg Pt L-1.

Key value for chemical safety assessment

Additional information

For dipotassium hexachloroplatinate, ecotoxicity data are read across from another platinum(IV) substance that also contains a chloro ligand, hexachloroplatinic acid.

 

The chronic toxicity of hexachloroplatinic acid to Daphnia magna was assessed in a publication (Biesinger and Christensen 1972), where the effects of various metals on survival, growth, reproduction and metabolism of Daphnia magna were investigated. The study is acceptable with restrictions. The study does not follow a standard test guideline although the methods used are described. A semi-static test of 21 days was conducted. Twelve concentrations of the test item were used. No analytical verification of test concentrations was conducted for platinum. The 21-day LC50 of hexachloroplatinic acid for Daphnia magna was determined to be 520 μg Pt L-1. The 21-day EC50 and EC16 of hexachloroplatinic acid for the reproductive impairment of Daphnia magna were determined to be 82 μg Pt L-1, and 16 μg Pt L-1, respectively. The NOEC was not stated in the publication, but is estimated to be 7.0 μg Pt L-1, calculated by the ratio of EC16/2.