-> 3 N2 + 8 H2 Many solid rocket propellant compositions can be used as gas generators. Inflation and fire suppression Many automobile airbags use sodium azide for inflation (). A small pyrotechnic charge triggers its decomposition, producing nitrogen gas, which inflates the airbag in around 30 milliseconds. A typical airbag in the US might contain 130 grams of sodium azide. Similar gas generators are used for fire suppression. Sodium azide decomposes exothermically to sodium and nitrogen. 2 NaN3 -> 2 Na + 3 N2 The resulting sodium is hazardous, so other materials are added, e.g. potassium nitrate and silica, to convert it to a silicate glass. Oxygen generation A chemical oxygen generator delivers breathable oxygen at a controlled rate over a prolonged period. Sodium, potassium, and lithium chlorates and perchlorates are used. Generation of fuel gas A device that converts coke or other carbonaceous material into producer gas may be used as a source of fuel gas for industrial use. Portable gas generators of this type were used during World War II to power vehicles as a way of alleviating petrol shortages. See also Carbon dioxide generator Flux switching alternator Industrial gas Kipp's apparatus Gas evolution reaction References Rocket engines Propellants Gas technologies Gases Industrial gases