Fire Safety Science Digital Archive

Some types of inorganic salts are used as flame retardant and/or fire suppressant. Their combustion inhibition ability can be referred qualitatively, but quantitative analyses on their combustion inhibition mechanisms are insufficient. In this study, they are classified by their combustion inhibition ability measured experimentally. Inhibition ability in gas-phase was measured as extinction concentration for burner flame when they were added to the flame, and that in solid-phase was measured as extinction concentration for burning filter paper when the paper held them. According to combustion extinction concentration in gas- and solid-phases, combustion extinction phenomena of the inorganic salts were classified in four categories.