A fire-extinguishing sheet according to the present disclosure has a laminate structure comprising a first fire-extinguishing agent layer and a second fire-extinguishing agent layer, wherein each of the first and second fire-extinguishing agent layers contains a fire-extinguishing agent, the fire-extinguishing agent contains at least one of a salt which is a deliquescent organic salt and a salt which is a deliquescent inorganic salt, and the second fire-extinguishing agent layer further contains an anti-deliquescence component. A device according to the present disclosure having an automatic fire-extinguishing function includes a fire-extinguishing object having a possibility of ignition, and a fire-extinguishing sheet disposed facing the fire-extinguishing object.

Environmentally-clean fire inhibiting and extinguishing dry powder compositions and products for sorbing flammable liquids while inhibiting ignition and extinguishing fire involving flammable hydrocarbon liquids such as, oils, fuels and non-polar solvents such as ketones and alcohols. The dry powder chemical compositions are made by mixing, blending and milling to suitable powder particle sizes, the following components: a fire extinguishing agent in the form of at least one alkali metal salt of a nonpolymeric saturated carboxylic acid; a powder fluidizing agent to help provide the dry powder composition with excellent fluid flow characteristics; and an oleophilic/hydrophobic composition for absorbing liquid hydrocarbons, while repelling water.

The disclosure relates to firefighting measures, and in particular, to firefighting compositions for preventing, retarding and extinguishing fire in a combustion zone that comprises a combination of at least one cooling component, at least one fire-isolation component comprising, at least one oxidizer diluting component, and at least one flame retarding component.