Registration Dossier
Registration Dossier
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EC number: 944-188-0 | CAS number: -
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
Studies on adsorption / desorption do not need to be conducted, as based on the physico-chemical properties and its extremely low water solubility, the substances of the "Iron Oxides Category" can be expected to have a low potential for adsorption.
Key value for chemical safety assessment
Additional information
Iron oxides exist in crystalline form as uncharged, solid substances and no adsorption to suspended solids and sediment is expected. Thus, a waiver is provided for this endpoint.
Due to their high density, iron oxides will be deposited on the ground of environmental waters. The hydrated form of diiron trioxide exists in an amorphous form when being precipitated from iron hydroxide. This form crystallises after ageing and drying. For soluble forms of Iron (III) a mean log Kd of 4.9; 6.6 and 2.7 for sediment, suspended particles and soil, respectively, is reported. Additionally, a log Kd, observed range of 3.97-5.66 for sediment and a log Kd of 4.50 for sediment is reported. Those studies are not reliable or not sufficiently described and are not taken into account for 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.
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