Registration Dossier
Registration Dossier
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EC number: 215-170-3 | CAS number: 1309-42-8
Endpoint summary
Administrative data
Description of key information
The substance is an inorganic hydroxide and has as such not subject to biodegradation.
Additional information
Magnesium hydroxide is not readily biodegradable.
According to Annex IX of REACH regulation 1907/2006, a study on biodegradation in water does not need to be conducted if the substance is highly insoluble in water. The solubility of Magnesium hydroxide in water was determined to be 1.78 mg total solids/L. Based on this; it is proposed that the test on biodegradation in water and sediment is not required.
The substance is an inorganic hydroxide and has as such not subject to biodegradation. According to annex VII of Regulation (EC) 1907/2006, 9.2.1.1 the study does not need to be conducted if the substance inorganic.
Furthermore, as an inorganic substance, Magnesium hydroxide has a very low propensity for adsorption to sediment. Based on the physico-chemical properties, breakdown pathway and the low likelihood of exposure, it is proposed a test on biodegradation in sediment is not required.
According to Annex IX of REACH Regulation 1907/2006, a study on the identification of degradation products does not need to be conducted if the substance is not readily biodegradable; as such this study is not required.
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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