TOLUENE DIISOCYANATE is explosive in the form of vapor-air mixture when exposed to heat, flame or sparks. Potentially violent polymerization reaction with strong bases or acyl chlorides. Reaction with aniline may generate enough heat to ignite unreacted portion and surrounding materials. Reaction with water liberates carbon dioxide. Potential explosion if stored in polyethylene containers due to absorption of water through the plastic. Emits toxic fumes of oxides of nitrogen when heated to decomposition[Lewis, 3rd ed., 1993, p. 1251].
Toluene diisocyanate is a mixture of 2,4-TDI and 2,6-
TDI. It is used in the manufacture of various polyurethane
products: elastic and rigid foams, paints, lacquers,
adhesives, binding agents, synthetics rubbers, and
Air & Water Reactions
Reaction with water liberates carbon dioxide.
A clear colorless to pale yellow liquid with a pungent odor. Denser than water. Burns, but may be difficult to ignite. Vapors are heavier than air. Vapors irritate the respiratory system. Toxic under prolonged exposure to vapor in low concentrations or short exposure to high concentrations of vapor. Carcinogenic. Produces toxic oxides of nitrogen during combustion. Used to make polyurethane foams and paints.
TOLUENE DIISOCYANATE is combustible.