Registration Dossier
Registration Dossier
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EC number: 254-671-1 | CAS number: 39881-32-8
Auto flammability
Administrative data
Link to relevant study record(s)
Description of key information
The auto-ignition temperature of Dibutylmagnesium in 15% Hexane according to the auto-ignition test consitions in the sense of the European Commission Regulation (EC) No. 440/2008, Method A.15. is 245 °C.
The auto-ignition temperature is mainly influenced by the solvent.
Key value for chemical safety assessment
Additional information
Dibutylmagnesium is a metalating reagent. The magnesium atom has a polarization effect on neighbouring carbon atom resulting in a negative partial charge. This carbon-atom is highly reactive towards active hydrogen-compounds such as water, carbon acids and alcohols. Dibutylmagnesium is not stable and react vigorously with water liberating flammable butane-gas which might ignite spontaneously in atmospheres with inadequate inert gas protection. Therefore Dibutylmagnesium should always be handled and stored under exclusion of water/humidity securing an inert gas atmosphere. Thus, it is only marketed and stabilised in an organic solution under the protection of N2 or inert gas. Therefore, the auto-ignition temperature is mainly influenced by the solvent.
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