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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

No direct evidence was found for a hazardous interaction between azo compounds and acetals. However, acetals are likely to react similarly to alcohols and ethers, and azo compounds are incompatible with alcohols and ethers:

Non-explosive decomposition of azoisobutyronitrile (AIBN) was observed in the presence of methanol (Bretherick, L. Bretherick's Handbook of Reactive Chemical Hazards, 4th Edition. Oxford: Butterworth-Heinemann. pp. 757).

The reaction of alcohols with alkyl and aryl diazo compounds produces various ether compounds and nitrogen upon reaction. However, organic azides and hydrazines are generally immiscible in alcohols and glycols and do not react violently (Rich, G. A., 1993, Dangerous Chemical Reactions, Gulf Publishing Co., Houston, TX, p. 255).

Diazonium salts release N2 and in the case of halogen salts HX gases upon heating with alcohols (Rodd, E. H, ed. The Chemistry of Carbon Compounds. New York: Elsevier Publishing Company, 1954. Vol. III pp. 287).

Diethyl ether and boron triazide will detonate at -35 C due to heat of solution (Wiberg, E. et al. 1954. Z. Naturforsch 9(B):498.); diethyl ether also reacts vigorously with bromoazide (Lewis, R.J., Sr. 1992. Sax's Dangerous Properties of Industrial Materials, 8th Edition. New York: Van Nostrand Reinhold. pp. 1614).

Potential Gas Byproducts

• Nitrogen (N2)
• Ethers