Calcium hypochlorite compositions

Abstract

Stable compositions of calcium hypochlorite containing selected hydrated inorganic salts having a sufficiently high enthalpy and the ability to provide water release to sufficiently quench reactions and reduce the potential for conflagration.

1 . A composition comprising a mixture of hydrated calcium hypochlorite with at least two hydrated inorganic salts, having an enthalpy, ΔH, of at least 150 calories/gram, and having a phase transition temperature, as defined by the melting point of 19° C. to 200° C., whereby said mixture provides water release in an endothermic reaction to sufficiently quench dangerous reactions and reduce potential for a conflagration while providing increased chlorine stability as compared to blends containing a single hydrated inorganic salt.  
     
     
         2 . The composition according to  claim 1 , the hydrated calcium hypochlorite contains at least 55% available chlorine.  
     
     
         3 . The composition according to  claim 2 , wherein the hydrated calcium hypochlorite contains at least 65% available chlorine.  
     
     
         4 . The composition according to  claim 1 , wherein the hydrated calcium hypochlorite contains from 5% to 22% water.  
     
     
         5 . The composition according to  claim 3 , wherein the hydrated calcium hypochlorite contains at least 5% to 22% water.  
     
     
         6 . The composition according to  claim 5 , wherein the hydrated calcium hypochlorite contains about 5.5% to 10% water.  
     
     
         7 . The composition according to  claim 1 , wherein the hydrated calcium hypochlorite is present in the amount of 40% to 90% by weight.  
     
     
         8 . The composition according to  claim 7 , wherein the concentration of the hydrated calcium hypochlorite is about 50% to 85% by weight.  
     
     
         9 . The composition according to  claim 8 , wherein the concentration of the hydrated calcium hypochlorite is about 60% to 80% by weight.  
     
     
         10 . The composition according to  claim 1 , wherein the hydrated inorganic salt has a phase transition temperature as defined by the melting point of 19° C. to 200° C.  
     
     
         11 . The composition according to  claim 10 , wherein the hydrated inorganic salt has a phase transition temperature as measured by the melting point between about 45° C. and 90° C.  
     
     
         12 . The composition according to  claim 1 , wherein the hydrated inorganic salt is an inorganic hydrated salt of fluoride, chloride, bromide, iodide, selenide, hydroxide, oxide, phosphate, silicate, borate, carbonate, nitrate, or sulfate.  
     
     
         13 . The composition according to  claim 12 , wherein the hydrated inorganic salt is a hydrated member selected from the group consisting of aluminum chloride, magnesium chloride, lithium selenide, sodium carbonate, lithium chloride, sodium hydrogen phosphate, sodium metasilicate, strontium hydroxide, trisodium phosphate, potassium fluoride, magnesium sulfate, calcium chloride, sodium sulfate, aluminum sulfate, sodium tetraborate, magnesium sulfate, magnesium bromide, rubidium aluminum sulfate, barium hydroxide, potassium aluminum sulfate, magnesium nitrate, sodium hydrogen phosphate, nickel sulfate, zinc sulfate, beryllium sulfate, lithium nitrate, strontium chloride, zinc nitrate, sodium pyrophosphate, calcium bromide, copper sulfate, copper nitrate, aluminum nitrate, sodium tetraborate, silver fluoride, calcium iodide, lithium bromide, lithium iodide, strontium bromide, calcium nitrate, strontium iodide, sodium bromide and strontium nitrate.  
     
     
         14 . The composition according to  claim 1 , wherein the hydrated inorganic salt is a pure hydrated inorganic salt or a double or other complex hydrated salt.  
     
     
         15 . A composition of reduced potential for conflagration comprising hydrated calcium hypochlorite and at least two members selected from the group consisting of magnesium sulfate heptahydrate, potassium aluminum sulfate dodecahydrate, trisodium phosphate dodecahydrate, sodium tripolyphosphate hexahydrate and sodium tetraborate decahydrate.  
     
     
         16 - 31 . (canceled)