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Hazard Predictions

• 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

Many active metals, especially in powder form, are strong reducing agents, so their interactions with oxidizing agents will generally be vigorous and therefore hazardous. Specific examples follow:

Titanium reacts violently with CuO, PbO, and PbO2 (J. W. Mellor, 1961. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 7, pp. 20. Longmans, Green and Co Ltd.).

Magnesium reacts violently with PbO2 (J. W. Mellor, 1940. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 4, pp. 272. Longmans, Green and Co Ltd.).

Powdered aluminum or magnesium ignites when mixed with oxidants such as barium peroxide, barium nitrate, potassium chlorate, or silica (silicon dioxide) powder (J. R. Partington, 1967, General and Inorganic Chemistry, London, MacMillan, 4th ed., p. 364; Pascal, P. 1958. Nouveau Trait茅 de Chimie Min茅rale. Vol. 4, p. 775. Masson et Cie.).

Active metals may cause inorganic oxidizing agents to liberate toxic and flammable H2S and NH3, toxic NOx, SO2, and inert CO2 gases (Predicted).

Potential Gas Byproducts

• Carbon Dioxide (CO2)
• Nitrogen Oxides (NOx)
• Sulfur Dioxide (SO2)