Registration Dossier
Registration Dossier
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EC number: 215-105-9 | CAS number: 1302-67-6
Biodegradation in water and sediment: simulation tests
Administrative data
- Endpoint:
- biodegradation in water: sediment simulation testing
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- the study does not need to be conducted because direct and indirect exposure of sediment is unlikely
- Justification for type of information:
- Justification for data waiving
In accordance with column 2 of REACH Annex IX, the biodegradation in water and sediment study does not need to be conducted as direct and indirect exposure of sediment is unlikely.
The Spinel production has basically no waste material, as dust and off-specification products are recycled in the Spinel production process. Dust and powder being swept during cleaning will be recycled in the production. Direct and indirect exposure of sediment is unlikely.
In addition, the substance magnesium dialuminium oxide is highly insoluble in water. The dissolved metal ions from the test substance do not exceed the concentration of metal ions in natural surface waters. The solubility of aluminium in the Spinel is 0.0039 mg/l (0.032 mg/l for magnesium respectively). The mean metal baseline concentration in European surface waters for aluminium is 0.075 mg/l and 11.5 mg/l for magnesium respectively (FOREGS Geochemical Baseline Program (FGBB): http://www.gsf.fi/foregs/geochem/). Furthermore the mean content of Al2O3 in topsoil is 10.5 % (subsoil 11.2 %), 1.18 % for MgO respectively (subsoil 1.41 %). Therefore no risk can be identified due to an exposure to minimum additional released quantities of aluminium and magnesium.JUSTIFICATION FOR DATA WAIVING
Data source
Materials and methods
Results and discussion
Applicant's summary and conclusion
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