GAS-GENERATING-AGENT COMPOSITION

Provided is a gas generating composition which easily generates a lumpy combustion residue and has good ignition ability. The gas generating composition includes a fuel and an oxidizing agent and meets the following requirements (a), (b), and (c): (a) one or more metals selected from copper, silver, platinum, and gold are included in the composition; (b) the combustion residue of the composition is formed substantially by one or more metals selected from copper, silver, platinum, and gold; and (c) the combustion temperature of the composition is less than a temperature obtained by adding 200°C to the melting point of copper, silver, platinum, or gold contained therein.