Process for the preparation of concentrated solutions of stabilized hypobromites

Abstract

The invention provides stabilized concentrated aqueous solutions of alkali hypobromites, as well as a process for the preparation of said stabilized concentrated solutions at low temperatures, comprising reacting a concentrated alkali hydroxide aqueous solution with bromine, adding to the non-stabilized reaction product an aqueous solution of a sulfamic compound to stabilize the hypobromite, and oxidizing bromide to produce additional hypobromite.

1 - 15 . (canceled) 
     
     
         16 . A sodium hypobromite solution containing at least 10 wt % of sodium hypobromite, less than 1 wt % of sodium bromide, up to 7 wt % sodium chloride, and at least 12 wt % of sodium sulfamate, wherein said sodium hypobromite is present in an amount equimolar in regard to said sodium chloride. 
     
     
         17 . The stabilized sodium hypobromite solution according to  claim 16 , comprising available bromine, expressed as chlorine, of at least 6%. 
     
     
         18 . The stabilized sodium hypobromite solution according to  claim 16 , comprising available bromine, expressed as chlorine, of at least 9%. 
     
     
         19 . The stabilized sodium hypobromite solution according to  claim 16 , useful for disinfection of industrial water in cooling towers, pulp and paper, wastes and similar.