Registration Dossier
Registration Dossier
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EC number: 263-454-0 | CAS number: 62202-86-2
Partition coefficient
Administrative data
Link to relevant study record(s)
- Endpoint:
- partition coefficient
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the substance reacts violently during the performance of the test
- Conclusions:
- Determination of partition coefficient n-octanol/water is technically not feasible for magnesium alkyls and not required because the substance reacts viloently during performance of the test and therefore cannot be conducted.
Reference
Description of key information
62202-86-2, butylethylmagnesium,
The endpoint is waived: The substance is water reactive.
Key value for chemical safety assessment
Additional information
According to the Annex VII Standard Information Requirements for REACH, determination of partition coefficient n-octanol/water is required. Column 2 – specific rules for adaption from column 1 – states that partition coefficient n-octanol/water does not need to be determined in case substance reacts violently during the performance of the test.
Magnesium alkyls are highly reactive both towards oxygen (air) and water as explained below. Almost all magnesium alkyls are infusible solids, however, because of difficulties in handling undiluted magnesium alkyl and the manufacturing processes used, they are exclusively marketed in liquid state (hydrocarbon solutions) and shipped under UN transport class 4.2 (substances liable to spontaneous combustion / pyrophoric liquids) or at least under class 4.3 (substances which in contact with water emit flammable gases).
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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