Patent ID: 7309503
Filing Date: 2007-12-18
Classification: A01N

Abstract:
1. A method of preparing a bromine-containing liquid, comprising: (a) combining solid sulfamic acid, water, and an alkaline source to form a solution of the salt of sulfamic acid, wherein said alkaline source is selected from the group consisting of alkali metal hydroxide and earth alkali metal hydroxide; (b) adding a bromine source to said solution, wherein said bromine source is selected from the group consisting of bromine chloride and elemental bromine; and (c) forming a bromine-containing liquid, wherein the amounts of said solid sulfamic acid, water, alkaline source, and bromine source are such that said bromine-containing liquid has an active ingredient concentration of greater than 18% as bromine or 8% expressed as chlorine, and further, wherein said bromine-containing liquid has a mole ratio of hydroxide ion to hydrogen ion source of 2.0:1 to 2.86:1.