Calcium hypochlorite composition
First Claim
1. A solid calcium hypochlorite composition consisting essentially of an admixture of particulate calcium hypochlorite, particulate metaboric acid, and optionally an inert hygroscopic inorganic material, wherein said metaboric acid is present in said composition in an amount such that the composition is classified as a Packing Group III Division 5.1 oxidizer or as a non-Division 5.1 oxidizer, and wherein said calcium hypochlorite is present in an amount and is of a concentration such that calcium hypochlorite composition would be classified as a Packing Group II Division 5.1 oxidizer in the absence of said particulate metaboric acid.
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Abstract
Calcium hypochlorite compositions that are classified as a Packing Group III Division 5.1 oxidizer material or as a non-Division 5.1 oxidizer material are described. In one embodiment, the compositions comprise an admixture of particulate calcium hypochlorite and particulate metaboric acid. The calcium hypochlorite is present in the composition in an amount and is of a concentration such that the composition would be classified as a Packing Group II Division 5.1 oxidizer in the absence of said particulate metaboric acid. Other embodiments described are solid shaped articles, e.g., tablets, comprising the described calcium hypochlorite-metaboric acid composition.
44 Citations
20 Claims
- 1. A solid calcium hypochlorite composition consisting essentially of an admixture of particulate calcium hypochlorite, particulate metaboric acid, and optionally an inert hygroscopic inorganic material, wherein said metaboric acid is present in said composition in an amount such that the composition is classified as a Packing Group III Division 5.1 oxidizer or as a non-Division 5.1 oxidizer, and wherein said calcium hypochlorite is present in an amount and is of a concentration such that calcium hypochlorite composition would be classified as a Packing Group II Division 5.1 oxidizer in the absence of said particulate metaboric acid.
- 12. A solid calcium hypochlorite composition consisting essentially of an admixture of particulate calcium hypochlorite, particulate metaboric acid and particulate, inert inorganic material, said metaboric acid and inert inorganic material being present in amounts such that the composition is classified as a Packing Group III Division 5.1 oxidizer or as a non-Division 5.1 oxidizer, said calcium hypochlorite being present in amounts sufficient to provide at least 39 percent by weight of free available chlorine.
- 16. A calcium hypochlorite package comprising (i) a solid calcium hypochlorite composition consisting essentially of an admixture of calcium hypochlorite, particulate metaboric acid, and optionally particulate, inert inorganic material, wherein said metaboric acid is present in said composition in amounts such that the composition is classified as a Packing Group III Division 5.1 oxidizer or as a non-Division 5.1 oxidizer, and wherein said calcium hypochiorite is present in amounts sufficient to provide at least 39 percent by weight of free available chlorine, and (ii) at least one separate package that contains a desiccant.
Specification