Showing papers on "Sodium chlorate published in 1973"

Electrolytic manufacture of chlorates, using a plurality of electrolytic cells

Abstract: A sodium chloride solution is electrolyzed to produce a high strength caustic solution and sodium chlorate solution, using two different electrolytic cells. In the first cell, a twocompartment cell in which the compartments are separated by a permselective membrane of a hydrolyzed copolymer of a perfluorinated hydrocarbon and a fluorosulfonated perfluorovinyl ether or of a sulfostyrenated perfluorinated ethylene propylene polymer, the sodium chloride solution is electrolyzed at a pH of about 4 to 7 to produce aqueous sodium hydroxide solution in the cathode compartment and chlorine and cell liquor containing chlorate in the anode compartment. Then, the cell liquor, already containing some chlorate, is further electrolyzed in a conventional chlorate cell or equivalent apparatus to convert chloride therein to chlorate. After separation of the chlorate from chloride present with it the chloride is returned to the first cell.

Gas generating compositions and apparatus

Abstract: A gas generator for inflating a bag comprising a deflagration composition yielding a gas comprising principally carbon dioxide and water vapor comprises a substantially homogeneous mixture of citric acid powder in the range of from about 23 to 37 percent by weight and an oxidizer powder selected from the group consisting of potassium chlorate, potassium perchlorate sodium chlorate, and sodium perchlorate. This composition is used adjacent a coolant powder comprising up to about 40 percent by weight of potassium chlorate and an endothermic decomposition coolant having a thermal decomposition product selected from the class consisting of carbon dioxide and water.

Gas generating compositions

Abstract: A deflagration composition yielding a gas comprising principally carbon dioxide and water vapor comprises a substantially homogeneous mixture of citric acid powder in the range of from about 25 to 37 percent by weight and an oxidizer powder selected from the group consisting of potassium chlorate, potassium perchlorate, sodium chlorate, and sodium perchlorate This composition may be used adjacent a coolant powder comprising up to about 40 percent by weight of potassium chlorate and an endothermic decomposition coolant having a thermal decomposition product selected from the class consisting of carbon dioxide and water

Sodium chlorate oxygen producing apparatus

Abstract: A sodium chlorate oxygen producing apparatus in which sodium chlorate candle is mounted in a sodium chlorate candle container and is supported therein by gas permeable thermally insulating material disposed around the candle, an ignition device is attached to the candle container and is adapted upon operation to ignite the sodium chlorate candle to produce oxygen for exit through an outlet passage, and a catalytic means is disposed in the path of oxygen to eliminate substantially all carbon monoxide and carbon dioxide from that oxygen, the sodium chlorate candle having first, second and third zones of different compositions in order from the point of ignition by the ignition device, the first zone being a rapidly burning flash composition comprising sodium chlorate, iron, barium peroxide and boron, said second zone being a more slowly burning cone composition comprising sodium chlorate, iron, barium peroxide, asbestos and a quantity of said flash composition, and said third zone being the slowest burning composition of the three zones, forming the main body of the candle and comprising sodium chlorate, iron, barium peroxide and glass powder, said sodium chlorate candle also having a booster compositoin layer disposed between an adjacent pair of said zones, said booster composition comprising at least iron and barium peroxide and having a rate of burning intermediate the rates of burning of said adjacent layers thereby to ensure an adequate transition of combustion from the faster burning to the slower burning of said adjacent zones.