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Hazard Predictions

• Corrosive: Reaction products may be corrosive
• Flammable: Reaction products may be flammable
• Generates gas: Reaction liberates gaseous products and may cause pressurization
• Generates heat: Exothermic reaction at ambient temperatures (releases heat)
• Intense or explosive reaction: Reaction may be particularly intense, violent, or explosive
• Toxic: Reaction products may be toxic

Magnesium reacts with barium carbonate to form explosive magnesium acetylide. If water is present, the acetylide may also be hydrolyzed to flammable acetylene gas (MCA Case History No. 1849, Case Histories of Accidents in the Chemical Industry, Washington, Manufacturing Chemists' Association).

Magnesium reacts with aqueous CuSO4 with evolution of flammable H2 gas (J. W. Mellor, 1946. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 3, pp. 247. Longmans, Green and Co Ltd.).

Reactions of aluminum with inorganic sulfates can be violently explosive (J. W. Mellor, 1946. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 5, pp. 217-19. Longmans, Green and Co Ltd.; Pascal, P. 1961. Nouveau Trait茅 de Chimie Min茅rale. Vol. 6, p. 507. Masson et Cie.).

Titanium can react incandescently or explosively with metal carbonates (J. W. Mellor, 1941. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 7, pp. 19. Longmans, Green and Co Ltd.).

Magnesium can react violently or explosively with inorganic sulfates, and these reactions can produce a variety of products including the toxic gas sulfur dioxide, and metal sulfides, metal oxides, and elemental sulfur, which can react further with magnesium (J. W. Mellor, 1940. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 4, pp. 269. Longmans, Green and Co Ltd.).

Magnesium forms explosive mixtures with magnesium sulfate (Shimizu, T. 1991. Chemical Abstracts 114:9175).

Magnesium reacts violently with alkali metal carbonates (Pieters, H. A. J. and Creyghton, J. W., 1957, Safety in the Chemical Laboratory, London, Academic Press, 2nd ed., pp. 30).

Potential Gas Byproducts

• Carbon Dioxide (CO2)
• Sulfur Dioxide (SO2)
• Hydrocarbons
• Hydrogen (H2)