The reaction between water and hot isocyanate may be vigorous. Water contamination will produce carbon dioxide. Do not reseal contaminated containers as pressure buildup may rupture them. Stable under normal conditions. The reaction with water is very slow under 50 C, but is accelerated at higher temperatures and in the presence of alkalies, tertiary amines, and metal compounds.
Some reactions can be violent.
Nitrogen, oxides, ammonia. Trace amounts of hydrogen cyanide. High temperatures in the presence of alkalies, tertiary amines, and metal compounds will accelerate polymerization. Possible evolution of carbon dioxide gas may rupture closed containers. This health hazard assessment is based on information from commercial and scientific literature.