Abstract: A set of blends for extinguishment of fires, suppression of explosions, and inertion against fires and explosions is disclosed. The blends are comprised of a bromine-containing component and a fluorine-containing component. The bromine-containing component is comprised of one or more hydrobromoalkanes, hydrobromoalkenes, and/or hydrobromoarenes. The fluorine-containing component is comprised of one or more fluorine-containing halocarbons, which may also contain chlorine. Specifically provided as fluorine-containing halocarbons are saturated and unsaturated hydrochlorofluorocarbons, hydrofluorocarbons, perfluorocarbons, perfluoroethers, hydrofluoroethers, and/or hydrofluoropolyethers. This provides a blend that mimics the fire and explosion protection action of halons and hydrobromofluorocarbons without the environmental impact associated with these compounds, which contain bromine and fluorine in the same molecule.