Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 259-105-7 | CAS number: 54326-11-3
Adsorption / desorption
Administrative data
Link to relevant study record(s)
Description of key information
The adsorption/desorption study was not conducted as (benzoato-O,O')hydroxy(octadecanoato-O,O')aluminium is expected to decompose rapidly to carbon dioxide, water and inorganic aluminium species. At environmental pH (ca 7.0), aluminium will mainly be in the form of insoluble hydrated oxide species which, although likely to absorb onto soil, are not expected to be an environmental risk as they are naturally abundant in the environment.
Key value for chemical safety assessment
Additional information
In accordance with column 2 of REACH Annex VIII, the adsorption/desorption study does not need to be conducted as (benzoato-O,O')hydroxy(octadecanoato-O,O')aluminium is expected to be readily biodegradable and the relevant degradation products decompose rapidly. The dissociation and biodegradation in the environment of the substances would result in carbon dioxide, water and hydrated aluminium oxide species.
No data for adsorption/desorption was included in the REACH dossiers for aluminium oxide or aluminium hydroxide. No data are available on the partition coefficient of purely inorganic aluminium compounds as, in accordance with column 2 of REACH Annex VII, the partition coefficient studies do not need to be conducted as the substances are inorganic. Aluminium is the most abundant metal to be found on earth making up 8.1% of the Earth’s crust (Lide, 2008). However, it is never found in the pure form but always in the form of minerals, for example bauxite, which is an impure form of hydrated oxide ore. As aluminium compounds are abundant in nature the adsorption/desorption of aluminium in the environment is not expected to be scientifically relevant.
In most cases the reactions to form the grease thickener occur in-situ during the grease manufacturing process and consequently grease thickeners normally only exist in the base oil matrix. In realistic use scenarios, the thickeners will be contained in base oil, with the formulated greases specifically designed to minimise the leaching of the thickener. As such, and given the very low solubility of the substance in water, the concentrations of the substance which would be available for adsorption to soil or sediment are limited.
References
Lide DR (editor) (2008) CRC Handbook of Chemistry and Physics (89th edition). CRC Press, Taylor and Francis Group
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.
