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Hazard Predictions

• Flammable: Reaction products may be flammable
• Generates gas: Reaction liberates gaseous products and may cause pressurization
• Toxic: Reaction products may be toxic

Nitriles may liberate toxic and flammable NH3 gas when exposed to water (Smith, P. A. S., Open-Chain Nitrogen Compounds, Vol. I. New York: W. A. Benjamin, Inc., 1965, pp. 212).

3,3'-IMINODIPROPIONITRILE is moisture sensitive. Some 18-month old bottles of this compound exploded, probably owing to slow hydrolysis and buildup of pressure. Solutions in water are unstable above pH 4 (National Toxicology Program, Institute of Environmental Health Sciences, National Institutes of Health (NTP). 1992. National Toxicology Program Chemical Repository Database. Research Triangle Park, North Carolina: NTP.).

ACETONE CYANOHYDRIN reacts with water to form the toxic gas hydrogen cyanide and the flammable liquid acetone (Brown, D. F., et al. (2000) Development of the Table of Initial Isolation and Protective Action Distances for the 2000 Emergency Response Guidebook, ANL/DIS-00-1, Argonne National Laboratory, Argonne IL).

Acetonitrile releases toxic and flammable HCN gas upon exposure to steam (Pohanish, R. P. and Greene, S. A. Wiley Guide to Chemical Incompatibilities, 2nd Edition. New York: Wiley-Interscience, 1997. pp. 509).

Potential Gas Byproducts

• Hydrogen Cyanide (HCN)
• Ammonia (NH3)