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The soda-acid extinguisher was first patented in 1866 by Francois Carlier of France, which mixed a solution of water and sodium bicarbonate with tartaric acid, producing the propellant carbon dioxide (CO 2) gas. A soda-acid extinguisher was patented in the U.S. in 1880 by Almon M. Granger.
Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate [9]), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO 3. It is a salt composed of a sodium cation (Na +) and a bicarbonate anion (HCO 3 −). Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder.
The company moved to Grosvenor Gardens, London in 1918, and then to Stoke Newington in 1920, where a factory to manufacture soda-acid and foam fire extinguishers was established. The London General Omnibus Company awarded Pyrene the contract for its fire extinguishers in 1924.
Dry chemical powder is used on all classes of fires. Dry chemical powder puts out the fire by coating the burning material with a thin layer of dust, thereby separating the fuel from the oxygen in the air. The powder also works to interrupt the chemical reaction of fire, so these extinguishers are extremely effective at putting out the fire.
Soda-acid extinguisher Weak water/acid solution inside a pressure vessel, which activates bicarbonate of soda when triggered, expelling "water" (mixture) under pressure from the resulting carbon dioxide. These are obsolete and usually replaced with an APW or multipurpose extinguisher. Soft suction hose, soft sleeve
Potassium bicarbonate (IUPAC name: potassium hydrogencarbonate, also known as potassium acid carbonate) is the inorganic compound with the chemical formula KHCO 3. It is a white solid. [1] A fire extinguisher containing potassium bicarbonate