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Hazard Predictions

• Flammable: Reaction products may be flammable
• Generates heat: Exothermic reaction at ambient temperatures (releases heat)

Magnesium can react with nitrogen to form the unstable compound magnesium nitride (Mg3N2). If sufficient nitrogen is present this reaction can be self-sustaining. The nitride produced can react with water to form ammonia (Kramer, D. A. 2010. Magnesium and Magnesium Alloys. Kirk-Othmer Encyclopedia of Chemical Technology. 1-55. (Online)).

Nitrogen, carbon dioxide, and halons (chlorofluorocarbon refrigerants) will react with molten magnesium (Amundsen, K., et al. 2003. Magnesium. Ullmann's Encyclopedia of Industrial Chemistry. (Online)).

Many powdered metals, including magnesium, zirconium, titanium, magnesium-aluminum alloy, aluminum, chromium, and manganese, are ignitable and explosive when suspended in a carbon dioxide atmosphere (Hartmann, I., Ind. Eng. Chem., 1948, 40, p. 756; Rhein, R. A., Report No. CR-60125, Washington, NASA, 1964; Guntz, A. et al, Compt. Rendus, 1897, 124, 187-190).

Magnesium and aluminum form flammable mixtures with finely divided polytetrafluoroethylene (Teflon) (Anon. 1969. Indust. Res. (9):15; Pittaluga, F. et al., Termotechnica, 1981, 25, p. 332-334).

Powdered beryllium, cerium, cerium alloys, thorium, titanium, uranium, and zirconium ignite when heated in mixtures of carbon dioxide and nitrogen (Rhein, R. A., Rept. No. CR-60125, Washington, NASA, 1964).