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EC number: 231-845-5 | CAS number: 7758-95-4
Biodegradation in water and sediment is not an applicable endpoint for lead. According to Column 2 of REACH Annex VII, the Ready Biodegradation Test does not need to be conducted if the substance is inorganic.
Annex VIII states that "Further degradation testing shall be considered if the chemical safety assessment according to Annex I indicates the need to investigate further the degradation of the substance. The choice of the appropriate test(s) will depend on the results of the chemical safety assessment."
Waiving of the need for data for this endpoint in the aquatic compartment (water and sediment) may be considered if “The substance is highly insoluble in water”, or if “The substance is readily biodegradable” (ECHA 2008, Chapter R.7B – Endpoint Specific Guidance).
However, for an inorganic substance for which the chemical assessment is based on the elemental concentration (i.e., pooling all inorganic speciation forms together), biotic degradation is an irrelevant process: biotic processes may alter the speciation form of an element, but it will not eliminate the element from the aquatic compartment by degradation or transformation. This elemental-based assessment (pooling all speciation forms together) can be considered as a worst-case assumption for the chemical assessment.
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.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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