Registration Dossier
Registration Dossier
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EC number: 231-115-6 | CAS number: 7440-05-3
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- activated sludge respiration inhibition testing
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because the substance is highly insoluble in water, hence indicating that aquatic toxicity is unlikely to occur
- Justification for type of information:
- no experimental study is required for this substance based on the outcome of a full TDp assay (cfr. IUCLID Section 4 'Water solubility') and the identified acute and chronic threshold values for ecotoxicity.
Reference
Description of key information
No experimental study is required for palladium based on the outcome of a full TDp assay (cfr. IUCLID Section 4 'Water solubility') and the identified acute and chronic threshold values with water soluble palladium substances.
The inhibition of the total respiration of activated sludge when exposed to tetraaminepalladium hydrogen carbonate was assessed. Based on nominal
concentrations, the 3-h EC50 and EC10 values were 12.56 and 5.26 mg Pd/L. These were the lowest threshold values for this endpoint (cfr Environmental Read Across Justification document in IUCLID Section 13 for more details).
Key value for chemical safety assessment
- EC50 for microorganisms:
- 12.56 mg/L
- EC10 or NOEC for microorganisms:
- 5.26 mg/L
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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