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EC number: 231-072-3
CAS number: 7429-90-5
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
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 environmental endpoint may be
considered if “The substance is highly insoluble in water”, or if “The
substance is readily biodegradable” (ECHA 2008, Chapter R.7B – Endpoint
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 in the environment is an
irrelevant process: biotic processes may alter the speciation form of an
element, but it will not eliminate the element from the environment by
degradation or transformation processes. 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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