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Patent No: EP1465835 [European Patent Office (EPO)] Application No: EP20020710244
Title: Preparation of non-hazardous brominating reagents
Issue Date: 31-12-2008 File Date: 25-01-2002
Inventor(s): Gadde R; Ghosh P K; Gandhi M R; Mehta A S; Subbarayappa A; Jethva A D; Vaghela S S; Majeethia K
IPC Classification: B01J 8/02;B01J 8/04;C01B 11/20;C01B 7/09;C01B 9/04;C01C 1/04;C01D 3/10;C07B 39/00;C07C 17/02;C07C 17/08;C07C 17/12;C07C 22/04;C07C 231/12;C07C 233/15;C07C 29/152;C07C 37/62;C07C 39/27;C07C 39/367;C01B 11/20;C01B 7/09;C01B 9/04;C01D 3/10
Abstract: The present invention relates to a non-hazardous brominating reagent from an aqueous alkaline bromine byproduct solution obtained from bromine recovery plant and containing 25 to 35 percent bromine dissolved in aqueous lime or sodium hydroxide containing alkali bromide and alkali bromate mixture having bromide to bromate stoichiometric ratio in the range of 5:1 to 5.1:1 or 2:1 to 2.1:1 and a pH ranging between 8-12 and also relates to a method for borminating aromatic compounds by using the above brominating agent.
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