Char yield and flash-fire propensity of pyrolysis gases from materials

Comparison of the char yield after occurrence of a flash fire in the pyrolysis gases from various materials indicates that increased char yield appears to be associated with reduced flash-fire propensity for certain types of materials. For certain other materials, flash-fire propensity appears to be independent of char yield. The mechanisms of thermal decomposition and char formation may be more important factors in flash-fire propensity than the quantitative degree of char formation.