| abstract |
The invention relates to a simple and fast process for the production of aluminum hydroxide and / or bromide of high basicity, characterized by the steps (1) reaction of an aqueous aluminum chloride and / or aluminum bromide solution and / or an aqueous aluminum hydroxychloride and / or aluminum hydroxybromide solution with aluminum in Form of granules, chips and / or pieces with a particle size of more than 2 mm in a more than ten-fold excess, based on the stoichiometric amount required for the reaction, by heating to a temperature of 90 to 110 ° C, (2) continuous measurement the hydrogen produced during the reaction by means of a gas measuring device, (3) stopping the reaction when as much hydrogen has been formed as corresponds to a complete conversion to an aluminum hydroxychloride and / or bromide in which more than 70% hydroxyl ions and less than 30% Chloride and / or bromide ions bound per aluminum n, and the use of the aluminum hydroxychloride and / or bromide produced according to the invention in cosmetic or pharmaceutical preparations and a device for carrying out the method. |