They should be left open to disperse any nitrogen trichloride that may form. Material that appears undamaged except for being damp on the outside should be opened and inspected immediately. If the plastic liner of the drum is damaged or the material is damp, the material should be neutralized to a non-oxidizing material for safe disposal. Bulging containers require extreme care. Contact the fire department.
Material glows on ignition and burns without a visible flame.
Contact of molten material with limited amounts of water may result in steam explosion. This product, when ignited, will burn with the evolution of noxious chlorine containing gases. Decomposition requires a continuos heat source. Once the heat source is removed, decomposition will not continue. In addition, when in contact with another combustible material, this product will increase the burning rate of the combustible material.