Collier's New Encyclopedia (1921)/Acetylene gas
ACETYLENE GAS, an illuminating gas formed by the action of water on Calcium Carbide (q. v.). This gas has come into general favor with cyclists for its brilliancy, safety, and the persistence of its flame in all circumstances. Recent experiments made to produce cheaper calcium carbide, by a new process, resulted in demonstrating that it can be produced at a cost of from half a cent to three cents a pound, or one-fifth its original cost. This will bring acetylene gas within the reach of every one, and it will probably eventually supersede many other forms of lighting. One kilogram of calcium carbide produces about 300 litres of acetylene gas. Acetylene takes fire at 480° Cent.; at 700° it decomposes into carbonic acid and hydrogen.