US Patent 7923036 Halogen-containing sanitizing composition

Compositions comprising a mixture of (a) a major amount of solid halogen-containing sanitizer material and (b) a minor amount of calcium oxide modified particulate boric acid, the amount of calcium oxide modified particulate boric acid being sufficient to enable the composition to be classified as a class 1 or class 2 NFPA oxidizer are described. Also described is particulate boric acid at least a portion of the particles thereof having on their surface at least a partial coating of calcium oxide, and a method for preparing such coated particulate boric acid.