TOXICITY OF COMBUSTION PRODUCTS WITH PARTICULAR REFERENCE TO POLYURETHANE

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Abstract
Analysis of the factors involved in numerous fires has revealed that most deaths were not due to flame contact, but were a consequence of the production of carbon monoxide and other noxious gases or vapours, in heat and smoke. The toxicity of the degradation products of synthetic polymeric materials in a fire has to be compared with that of natural products. In experimental studies in animals the toxicity of the pyrolysis products of polyurethanes seemed to be either lower than, or within the range of, conventional materials. The increase in the toxicity of the pyrolysis products in the case of a special noncommercial fire-retardant rigid polyurethane foam is shown and the toxicity data of trimcthylolpropane phosphate, which is responsible for the high toxicity of the smoke, are given.

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