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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.
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.
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 fire extinguisher worked on the principle of a pressurised CO 2 cartridge being pierced, the pressure inside thus released expanding into the extinguisher body and expelling the contents under pressure. Other types of extinguishers worked by mixing sulphuric acid with a solution of bicarbonate and water-the soda acid extinguisher.
Frederick Smith was spurred to create many of the chemical compounds, especially perchlorates and trace metal perchloric acid, in response to the needs of his colleagues in analytical chemistry. [17] This tradition is continued here and is the most commonly associated part of the business when a chemist or researcher hears of GFS Chemicals.
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