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Hazard Predictions

• Explosive: Reaction products may be explosive or sensitive to shock or friction
• Generates gas: Reaction liberates gaseous products and may cause pressurization
• Intense or explosive reaction: Reaction may be particularly intense, violent, or explosive

Sodium azide forms explosive salts with metal halides (Lenga, R.E., ed. 1988. Sigma Aldrich Library of Chemical Safety Data, 2nd Edition. Sigma Aldrich. pp. 3129), including HgCl2 (University Safety Association. 1992. Safety Digest. pp. 44, 22).

Iron salts catalyze exothermic decomposition of azidoacetic acid at ambient temperatures; the reaction may accelerate to explosion at high temperatures (Borowski, S.J. 1976. Chemical and Engineering News 54(44):5).

Acidic solutions of Cu+ will catalyze the decomposition of diazo compounds at ambient temperatures, evolving inert N2 gas (Forstinger, K., H.J. Metz. 2002. Diazo Compounds and Diazo Reactions. In Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH Verlag GmbH & Co. KgaA. (Online)); the reaction may accelerate to explosion at 90C (Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 321).

Organic azides are sensitized by metal salts (Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 321).

The combination of Mn(III), styrene, and NaN3 can explode (Fristad, W.E. et al. 1985. Journal of Organic Chemistry 50:3468).

Potential Gas Byproducts

• Nitrogen (N2)