The resulting solids were quite soluble in anhydrous ethanol and had a CCl4 compatibility of 149 cc. Examples of suitable propellants include trichloromono-fluoromethane (Freon 12), dichlorotetrafluoroethane (Freon 114), monochlorodifluoromethane (Freon 22), trichlorofluororethane (Freon 113), octafluorocyclobutane (Freon C 318), pentafluoromonochloroethane (Freon 115), dimethyl ether, vinyl chloride, nitrous oxide, nitrogen, 1,1,1-chlorodifluoroethane. 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. "Development of the Table of Initial Isolation and Protective Distances for the 2008 Emergency Response Guidebook", ANL/DIS-09-2, D.F. Aerosol samples D and G through J were applied by spraying the axilla for two seconds from a distance of about six to eight inches. In order to assure completion of the reaction, an additional 5 g of aluminum powder was added, and the reactants were filtered after 15 minutes. A portion of the clear filtrate was rotary vacuum dried at ambient temperatures and about 10 mm Hg pressure to yield an off-white solid assaying 20.5% Al, 31.2% Br, Al/Br=1.95, and which was readily soluble in anhydrous ethanol. Aluminium in form of powder. Office of Response and Restoration, A 100 gram sample was dried at room temperature to a constant weight of 57.1 grams which assayed 20.1% Al, 28.1% Br and 19.8% H2 O (calculated). By contrast, a spray dried alcohol soluble basic aluminum chloride, prepared according to our copending application Ser. The chemical crystallizes in colorless prisms, possessing a saline taste; it sublimes on heating and is easily soluble in water. Aluminum bromide-6-hydrate. May catalyze organic reactions. Another product was prepared as in Example II only using less aluminum powder. Reaction with water can produce some acidic HBr, which may destroy containers [Nicholson, D.G. To the agitated slurry maintained at ambient temperatures was added 84 g of liquid bromine over a period of 30 minutes. Chem. These properties make the 5/6 basic aluminum bromides particularly suitable for use in anti-perspirant compositions, especially the aerosol sprays. 4 0 obj
[�K۱t;��;|L\����핻Y�!��ye��6�v�I�e�c�+��D��ÕT���= �ˤX�^�Û�ir`h��c�����'��{����RUjS. Both of these values are comparable to those for the glycol complex basic aluminum halides described in U.S. Pat. Res., 1986, 19(3), 78]. May catalyze organic reactions. Haney, Argonne National Laboratory, Argonne, Illinois, June 2009. Aluminum Bromide is a highly water soluble crystalline Aluminum source for uses compatible with Bromides and lower (acidic) pH. Even more unexpected is the finding that the basic aluminum bromides are far better anti-perspirants than the presently commercially available aluminum chlorhydroxides. USA.gov. However, cosmetic preparations containing these salts have the disadvantage of irritating or burning human skin and corroding the fabric of clothing worn next to the skin. The present invention relates to basic aluminum bromide compositions and their uses. The product was readily soluble to the extent of at least 30% in anhydrous SDA-40 and had a CCl4 compatibility of 207 cc. To a reactor containing 715 grams of 99.9% Al pellets was added 430 grams of H2 O and 320 grams of 48% HBr. When the pH reaches a value of 3.0, further readings should be taken every fifteen minutes until a pH end point of 3.45 is reached. Basic aluminum bromides having a basicity of about 5/6 have been found to be readily soluble in cosmetic solvents such as anhydrous ethanol, to have a high degree of compatibility with halogenated hydrocarbons, and to have excellent astringent characteristics. An acid. Most metal bromide compounds are water soluble for uses in water treatment, chemical analysis and in ultra high purity for certain crystal growth applications. listed below. Aerosol cans were filled with the same amount of solution and propellant as in Example VIII to produce a 10% basic aluminum bromide aerosol formulation. Belongs to the Following Reactive Group(s). Chem. The temperature was increased to about 95° C. and maintained for a period of 2 hours, after which the reaction was virtually complete. These adjusted ratios were converted to percent reduction in sweating rates by the following formula: 100×(1.000-adjusted ratio). The basic aluminum bromides used in the present invention may be prepared in a manner analogous to the conventional production of aluminum chlorhydroxide by reacting aluminum metal with the hydrobromic acid in water solution, or by reacting aluminum metal with a water solution of aluminum bromide. Chem. 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. 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. © 2004-2020 FreePatentsOnline.com. & Terms of Use. Find another reaction. Aluminium bromide causes burns and its dust particles are dangerous to the eyes. Sweating was induced by seating the subjects in a room maintained at about 100° F. and at a relative humidity of about 35%. This section provides a listing of alternate names for this chemical, It should be understood that the above formula is greatly simplified and is intended to include simple hydrated salts, polymers and other complexes or mixtures, such that the basic formula would be an average consisting of whole and/or fractional units. et al. A sample of the filtrate was rotary vacuum dried at ambient temperature to give a solid which assayed 18.9% Al, 32.0% Br, Al/Br=1.75 and 20.2% H2 O (calculated). <>
Freeman, and W.D.