Process for preparing sanitizing compositions

Claim 1

THE METHOD FOR PREPARING BACTERICIDAL SOLUTIONS SUITABLE FOR SANITIZING FOOD-HANDLING EQUIPMENT AND THE LIKE THAT COMPRISES, REACTING CRUDE IODINE AND YELLOW ELEMENTAL PHOSPHORUS IN SUBSTANTIALLY STOICHIOMETRIC PROPORTIONS TO EFFECT REDUCTION OF THE IODINE TO HYDRIODIC, ACID AND OXIDATION OF THE PHOSPHORUS TO PHOSPHORIC ACID, SAID REACTION BEING EFFECTED BY THE CONTROLLED ADDITION OF THE PHOSPHORUS TO AN AQUEOUS REACTION MEDIUM CONTAINING SAID IODINE AT A RATE SUCH THAT THE TEMPERATURE OF THE REACTION MIXTURE DOES NOT EXCEED ABOUT 55*C., DISSOLVING ADDITIONAL IODINE WITHIN THE THE RESULTING SOLUTION TO PROVIDE A DESIRED PROPORTION OF TITRATABLE FREE IODINE THEREIN, THEREAFTER ADDING SODIUM PHOSPHATE TO SAID REACTION MIXTURE IN A SUBSTANTIALLY STIOCHIOMETRIC QUANTITY FOR REACTION WITH THE HYDRIODIC ACID TO YIELD ADDITIONAL PHOSPHORIC ACID AND SODIUM IODIDE, AND RECOVERING A FINAL SOLUTION CONTAINING TITRATABLE FREE IODINE, SODIUM IODIDE AND PARTIALLY NEUTRALIZED PHOSPHORIC ACID IN AN AMOUNT SUFFICENT TO BUFFER THE SOLUTION AND TO INHIBIT CORROSION OF METALS BY THE OIDINE WHEN SAID SOLUTION IS EMPLOYED TO SANITIZING PURPOSES.