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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

Alkali metals react rapidly and exothermically with water at room temperature to form flammable H2 gas and strongly basic metal hydroxides. For sodium, potassium, cesium, and rubidium, the heat evolved is usually enough to ignite the hydrogen gas, especially in the presence of air (Dickinson, F. 1961. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 2, Supplement 2, p. 444-445; Vol. 2, Supplement 3, p. 1559. Longmans, Green and Co Ltd.; Mellor, J. W. 1946. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 2, p. 419, 468. Longmans, Green and Co Ltd.; Eggeman, T. 2007. Sodium and Sodium Alloys. Kirk-Othmer Encyclopedia of Chemical Technology. John Wiley & Sons, Inc. (Online); Wietelmann, U. and Bauer, R. J. 2000. Lithium and Lithium Compounds. Ullmann's Encyclopedia of Industrial Chemistry. (Online)).

Potential Gas Byproducts

• Hydrogen (H2)