The reaction rate and temperature can be controlled by means of heating and cooling when needed. USA.gov. Ammonium Bromide is strong electrolyte when put in water: Ammonium bromide decomposes to ammonia and hydrogen bromide when heated at elevated temperatures: Ammonium bromide is used for photography in films, plates and papers; in fireproofing of wood; in lithography and process engraving; in corrosion inhibitors; and in pharmaceutical preparations. The amount of aerosol and stick samples used was determined by weighing each container before and after each application. A 20% solution of basic aluminum bromide was prepared by adding 300 grams of the bromide to 1200 grams of SDA-40 and mixing until clear. Deliquescent. generation, PRODUCTION OF WATER SOLUBLE BASIC ALUMINUM HALIDE COMPOUND, Composition of matter for treating animal tissue, <- Previous Patent (Tanning and ultra-vi...). Sufficient aluminum powder should be added at the start so that the exothermic reaction will produce a solution temperature of about 95° C. After the desired temperature is reached, the aluminum powder should be added in small increments such that the total addition is complete in about forty-five minutes for a 1 liter batch. & Terms of Use. Sample applications were made by a technician to one of the axillae (armpits) of each subject after the axillae had been rinsed with tepid water to remove any soap residue. Accordingly, it is an object of the present invention to find an aluminum compound having a high degree of solubility in alcohols and other organic solvents. Another interesting comparison is that a 56% alcohol solution of basic aluminum bromide has a viscosity of about 200 centipoises (cps), whereas a 40% solution of the alcohol soluble basic aluminum chloride has a viscosity of about 300 cps. Web site owner: In order to assure completion of the reaction, an additional 5 g of aluminum powder was added, and the mixture was filtered after 15 minutes. The solution was heated to about 70° C. and aluminum powder was added to expedite attaining a temperature of 95° C. A total of 172 grams of aluminum powder was added in increments during the preparation such that reactivity did not become too vigorous. 84,093, filed Oct. 26, 1970, now U.S. Pat. In all cases sweating ratios were calculated by dividing the amount of sweat collected from the test axilla by that obtained from the control axilla. Similar results were observed for cans stored at 105° F. for one month except that the linings were discolored and one can showed bottom peeling and soft lining. Similar results were observed for cans stored at ambient for one month except that no discoloration was observed. Initially, it is added to the vessel in the solid form and water is carefully added until the reaction subsides. In the bottles there was a slight precipitate for samples stored at 105° F. and only a trace precipitate for samples stored at ambient. 1 0 obj The product was readily soluble to the extent of at least 30% in anhydrous SDA-40 and had a CCl4 compatibility of 207 cc. Lower Explosive Limit (LEL): data unavailable, Upper Explosive Limit (UEL): data unavailable, Autoignition Temperature: data unavailable, Vapor Density (Relative to Air): data unavailable. The solids had a CCl4 compatibility of 127 cc. The chemical crystallizes in colorless prisms, possessing a saline taste; it sublimes on heating and is easily soluble in water. Aerosol cans from American Miraspra (DX20, J4 lined, BX4 LSC with OEL 500 TSS valves) were filled with 75.5 grams of the 14% solution and 55.4 mls of the propellant mixture. "Development of the Table of Initial Isolation and Protective Distances for the 2008 Emergency Response Guidebook", ANL/DIS-09-2, D.F. listed below. Aluminum bromide-6-hydrate. A 10% basic aluminum bromide aerosol formulation was prepared as in Example X and placed in an American Miraspra WC unlined can. To a reactor containing 715 grams of 99.9% Al pellets was added 430 grams of H2 O and 320 grams of 48% HBr. This reaction may have been catalyzed by something in solution. The oral and ip doses which were lethal in 50% of animals (LD50) were determined for aluminum nitrate (Al(NO3)3), aluminum chloride (AlCl3), aluminum sulfate (Al2(SO4)3), and aluminum bromide (AlBr3) in Sprague Dawley rats and Swiss mice. Aluminum bromide has very little commercial use but does electroplate aluminum to steel producing a smooth, thick, adherent, and shiny finish. The study was carried out in four one week periods during the weeks of Feb. 23, Mar. Chem. Use caution: Liquids with this reactive group classification have been With the advent of the popular aerosol dispenser for anti-perspirants, there have arisen a number of additional requirements for anti-perspirant compositions. The chemical crystallizes in colorless prisms, possessing a saline taste; it sublimes on heating and is easily soluble in water. Belongs to the Following Reactive Group(s). Use caution: Liquids with this reactive group classification have been The filtrate assayed 10.75% Al and 15.9% Br and had a viscosity of 12.5 cp., a specific gravity of 1.415, and a pH of 3.55. 4 0 obj Brown, H.M. Hartmann, W.A. For example the solids prepared in Example I were soluble to the extent of 30% in anhydrous ethanol (SDA=40) in less than 0.5 hours and had a CCl4 compatibility of 111 cc. Based on a scenario where the chemical is spilled into an excess of water (at least 5 fold excess of water), half of the maximum theoretical yield of Hydrogen Bromide gas will be created in 0.02 minutes. May catalyze organic reactions. endobj Still further objects will appear hereinafter. May catalyze organic reactions. Application Mean Mean 1 3 4 3 & 4 5 Sam- Hours* ple Subjects 0 1/3 2/3 1 1 1 22, Applications 3 & 4 Application 5 Unadjusted Adjusted Unadjusted Adjusted Sample Subjects Mean Mean Mean Mean. On exposure to air it gradually assumes a yellow color because of the oxidation of traces of bromide (Br − ) to bromine (Br 2 ). For some time now aluminum compounds have been known in the art to be useful as the active ingredient in astringent or anti-perspirant compositions and other cosmetic products. Reaction with water can produce acidic HBr, which may destroy containers [Nicholson, D.G. This does not prevent HBr formation by a catalytic mechanism, but under normal conditions anhydrous aluminum bromide is quite unreactive. After one and one half months no failures in the spray tests were observed. Find another reaction. Bromomethane was a particular cause for concern but banning it has proved impossible because it has some uses for which alternatives have not been found. This reaction may have been catalyzed by something in solution. Adjusted ratios were then calculated by dividing the individual ratios by the mean control ratio for each subject. If an Al/Br ratio of about 1.9 to 2.0 is desired, the reaction should be allowed to continue for no longer than about 10 to 15 minutes beyond the pH endpoint before filtering. Hydrated aluminum bromide could also be prepared by reacting HBr with bauxite. A 1,000 gram sample of the filtrate was air dried at room temperature to a constant weight of 540 grams. It should be understood that the tests in the above Examples (VIII-XI) were not exhaustive, and only 1 or 2 of the dozen or more cans prepared in each example were actually opened for observation of any corrosive effects.
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