Potassium iodate Application And Production method

                                                                   Potassium iodate Application And Production method

Chemical Properties

Colorless monoclinic crystal or white crystalline powder. Odorless. Soluble in water, dilute acid, ethylenediamine, ethanolamine, and potassium iodide aqueous solutions; slightly soluble in liquid sulfur dioxide; insoluble in alcohols and ammonia.

Application

Potassium iodate is a fairly strong oxidizing agent that may be used in the assay of a number of pharmaceutical substances, for instance : benzalkonium chloride, cetrimide, hydralazine hydrochloride, potassium iodide, phenylhydrazine hydrochloride, semicarbazide hydrochloride and the like. Under appropriate experimental parameters the iodate reacts quantitatively with both iodides and iodine. It is, however, interesting to observe here that the iodate titrations may be carried out effectively in the presence of saturated organic acids, alcohol and a host of other organic substances.
The oxidation-reduction methods with potassium iodate invariably based on the formation of iodine monochloride (ICl) in a medium of strong hydrochloric acid solution.

Production method

The potassium chlorate oxidation method uses iodine and potassium chlorate in a ratio of 12: KCI()3=21： Add 20 and water into the reactor, and adjust the pH of the solution to 1-2 with nitric acid. Boil the solution at 80-90 ℃ with stirring for 1 hour to complete the reaction and expel the chlorine gas. Cool the solution to room temperature to precipitate potassium crystals of hydrogen iodate. After filtration, dissolve the crystals in hot water and add caustic potassium to neutralize the solution until the pH value is 10. Then, cool, crystallize, filter, and dry to obtain the finished product of potassium iodate. Its 6I2+11KClO3+3H2O → 6KH (IO3) 2+5KC1+3C12 ↑