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. <> National Oceanic and Atmospheric Administration. Experimental work at Argonne National Laboratory has determined that there is essentially no HBr gas formation; the substance is quite unreactive in water. For instance, an anti-perspirant composition must be found which is not only effective to inhibit perspiration in a safe and non-corrosive manner, but which is also compatible with the halogenated hydrocarbons which are employed to propel aerosol sprays. When disposing of aluminium bromide work in a fume cupboard and wear protective goggles and gloves. et al. Inorg. For a 2 liter batch, the time would increase to about 60-90 minutes, but does not go up in proportion for still larger batches. The solution assayed 11.5% Al, 16.1% Br and an Al/Br ratio of 2.11. endobj Reaction with water can produce some acidic HBr, which may destroy containers [Nicholson, D.G. known to react with the If higher or lower Al/Br ratios are desired, a correspondingly higher or lower pH endpoint is used. 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. The resulting solids were quite soluble in anhydrous ethanol and had a CCl4 compatibility of 149 cc. Another product was prepared as in Example II only using less aluminum powder. Corrosive to metals. A light-yellow colored liquid. Corrosive to metals. National Ocean Service, �4��>��ڒ]�H�N>Ч�Y�t�H��ί��,�$��j��y�����whq�V|����'g�"��[���D�zxPH��"��eU�F���E����9<8>��׫\�nŏ����'Bx�d���9���B*q~yx F�SV Lower Explosive Limit (LEL): data unavailable, Upper Explosive Limit (UEL): data unavailable, Autoignition Temperature: data unavailable, Vapor Density (Relative to Air): data unavailable. <>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 16 0 R] /MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> The 95% confidence limits of these values are omitted, but range from about 4 to 15%. When the heat of reaction starts to subside, pH readings (25° C.) should start to be taken. It is another object of the present invention to find an aluminum compound which may be used to form an effective anti-perspirant composition. 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. Freeman, and W.D. A 1,000 gram sample of the filtrate was air dried at room temperature to a constant weight of 540 grams. 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). In starting with AlBr3, the anhydrous form is the most convenient. [�K۱t;��;|L\����핻Y�!��ye��6�v�I�e�c�+��D��ÕT���= �ˤX�^�Û�ir`h��c�����'��{����RUjS. The percent reductions in sweating observed after one, three, four and five applications of the test materials are shown in Table II. absorbents It is a further object of the present invention to find an alcohol soluble aluminum compound which is compatible with conventional aerosol propellants. & Terms of Use. known to react with the After one week at 105° F. the can, valve and aerosol formulation were in excellent condition.