Registration Dossier
Registration Dossier
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EC number: 215-100-1 | CAS number: 1302-42-7
Endpoint summary
Administrative data
Description of key information
Additional information
Sodium aluminate is stable only in alkaline conditions. If released to the environment, sodium aluminate hydrolyses rapidly under environmental conditions to aluminium hydroxide and as a result precipitates in aquatic systems or deposits as aluminium oxide in sediment or soil, whereas the sodium part will be found dissociated as sodium ions predominantly in water. Based on the transformation/dissolution study, at pH 6, both aluminium hydroxide and aluminium oxide, showed very low release (approximately 3 µg/L) of dissolved aluminium species. The same was found for aluminium hydroxide at pH 8 and aluminium oxide at pH 8 by the loading of 1 mg/L. At high loading of 100 mg/L, aluminium oxide released dissolved aluminium in a biphasic kinetic, a fast increase reaching a maximum at 48 h (113 µg/L) and a slow decrease phase reaching 82 µg/L at day 7 (CIMM, 2007)
Sodium aluminate and its decomposition products do not be degraded in environment through microbial attack. Phototransformation is not relevant for sodium aluminate and its decomposition products, aluminium hydroxide and aluminium oxide, as well as sodium hydroxide. Aluminum in compounds has only one oxidation state (+3), and would not undergo oxidation-reduction reactions under environmental conditions.
.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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