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Hazard Predictions

• 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

Diazomethane explodes on contact with group I metals (Eistert, B. 1948. Newer Methods of Preparative Organic Chemistry. New York: Interscience. pp. 518; Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 1085).

Anhydrous hydrazine reacts explosively with sodium or potassium. Hydrazine hydrate and sodium react very exothermically, generating hydrogen and ammonia (Mellor, J. 1940. Mellor's Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 8, p. 316. Longmans, Green and Co Ltd.; Bretherick, L. 1996. Bretherick's Handbook of Reactive Chemical Hazards. Vol. 1, p. 1571. Fifth Ed. Urben, P.G., Ed. Butterworth-Heinemann, Boston, MA).

Azides decompose rapidly in the presence of one-electron reductants, releasing nitrogen gas and generating reactive radical intermediates (J. E. Leffler and H. H. Gibson Jr., J. Am. Chem. Soc. 1968, 90, 4117-4121). Alkali metals are very strong one-electron reductants (W.C. Fernelius and G.W. Watt, Chem. Rev. 1937, 20, 195-258).

Potential Gas Byproducts

• Hydrogen (H2)
• Nitrogen (N2)
• Ammonia (NH3)