[Toxicity of products resulting from the cold combustion of polypropylene]

The cool flame combustion of polypropylene at 350 degrees C leads to the formation of toxic compounds which can cause death in mice. Under the conditions described, the LD50 is close to 0.95 g. However the survival times with 0.50 g samples are longer than those obtained by operating in an ambient atmosphere at 500 degrees and 800 degrees C after a slow introduction of the material into the oven.