Registration Dossier
Registration Dossier
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EC number: 254-671-1 | CAS number: 39881-32-8
Flash point
Administrative data
Link to relevant study record(s)
Description of key information
At -30 °C the test item showed a formation of gel at the surface but could still be stirred.
A correction to a pressure of 1013.3 hPa was not performed because it would suggest an unrealistic precision of the final result which is defined by the lowest temperature that can be measured in the Abel apparatus. The final result is nevertheless valid for atmospheric conditions (1013 hPa)
Key value for chemical safety assessment
- Flash point at 101 325 Pa:
- -30 °C
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 flash point is mainly influenced by the solvent.
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