Dibutylmagnesium, typ. 15 % solution in Hexane (typ. 0.7 M)
C8-H18-Mg
Dibutylmagnesium (CAS 39881-32-8) is an organomagnesium compound with molecular formula C8H18Mg. It is supplied as a typical 15% solution in Hexane.
In organic synthesis it is used in Grignard-type reactions as a reactive carbon nucleophile or in deprotonation reactions as a base. In polymerizations it is used as a raw material for synthesis of Ziegler-Natta catalysts or as a modifier for BuLi-initiated anionic polymerizations.
Dibutylmagnesium reacts readily with moisture and oxygen and should be handled under dry, inert conditions. Consult the SDS and site-specific procedures for compatible materials, fire response, and storage.
Applications
Metalating agent for amines, alcohols and carboxylic acids. Reagent for synthesis of Ziegler-Natta catalyst system. Modifier for anionic polymerization initiation.
Specifications
- Dibutylmagnesium: 15.0 – 16.0 %
- Lithium: max. 0,015 %
- Chloride: max. 0,25 %
- Magnesium: min. 2,0 %
Method of Analysis
Determination of assay as total base by acidimetric titration after hydrolysis, Lithium by FES, Chloride by argentometric titration and Magnesium by komplexometric titration. Detailed description available on request.Handling Instructions
Dibutylmagnesium solutions are non-pyrophoric. Increase in concentration due to evaporation of solvent results in rising danger of self-ignition. The material should only be handled under inert gas atmosphere. Vapors may form explosive mixtures with air. Vapors are heavier than air and may spread along floors. Flash back possible over considerable distance. Use only explosion-proof equipment. Protect from frost, heat and sunlight. Never add water, acids or oxidizing materials. In case of fire use dry extinguishers based on sodium chloride or limestone powder, never use water or CO2. Pay attention to the Safety Data Sheet - Section 7.
Storage Instructions
When stored according to SDS the material is fairly stable. We still recommend to retest the material 6 month after date of analysis if included on CoA. If not included, use the date of manufacturing for the calculation. As material tends to crystallize at lower temperatures, it should be stored above -10 °C.
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