Registration Dossier
Registration Dossier
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EC number: 241-010-7 | CAS number: 16941-12-1
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The NOEC is estimated to be 7.0 μg Pt L-1.
Key value for chemical safety assessment
Additional information
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 (1092 μg test item 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 (172.26 μg test item L-1), and 16 μg Pt L-1 (33.61 μg test item 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.
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