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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)
• Polymerization hazard: Polymerization reaction may become intense and may cause pressurization
• Toxic: Reaction products may be toxic

Halogens may initiate polymerization of acrylonitrile, even at reduced temperatures (MCA Case History No. 1214, Case Histories of Accidents in the Chemical Industry, Manufacturing Chemists' Association, Washington).

Nitriles may react with the halogens to liberate toxic HX gases (Smith, P. A. S., Open-Chain Nitrogen Compounds, Vol. I. New York: W. A. Benjamin, Inc., 1965, pp. 218).

Potential Gas Byproducts

• Hydrogen Halide (HX)
• Acid Fumes