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A gas generating composition comprises an organic fuel and an ammonium nitrate oxidizer which is phase stabilized with an alkali metal or alkaline earth metal salt. The composition also comprises an ammonium salt coolant selected from the group consisting of an ammonium halide, ammonium sulfate, and

A gas generating composition comprises an organic fuel and an ammonium nitrate oxidizer which is phase stabilized with an alkali metal or alkaline earth metal salt. The composition also comprises an ammonium salt coolant selected from the group consisting of an ammonium halide, ammonium sulfate, and ammonium sulfamate. A preferred coolant is ammonium chloride.

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[ What is claimed is:] [1.]1. A gas generating composition suitable for inflating a vehicle occupant protection device comprising:an organic fuel;phase stabilized ammonium nitrate wherein the phase stabilizer is an alkali metal nitrate, an alkali metal nitrite, an alkali metal peroxide, an alkali me

[ What is claimed is:] [1.]1. A gas generating composition suitable for inflating a vehicle occupant protection device comprising:an organic fuel;phase stabilized ammonium nitrate wherein the phase stabilizer is an alkali metal nitrate, an alkali metal nitrite, an alkali metal peroxide, an alkali metal dinitramide, an alkaline earth metal nitrate, an alkaline earth metal nitrite, an alkaline earth metal peroxide, an alkaline earth metal dinitramide, or a combination thereof; andan ammonium halide coolant,wherein the gas generating composition produces, upon combustion, a reaction product which comprises the anion of the ammonium halide coolant reacted with the alkali metal or alkaline earth metal cation of the phase stabilizer.