Ammonium hypoiodite

C. F. Schonbein also prepared ammonium hypobromite by a process analogous to that employed for the hypochlorite, and obtained a liquid with similar oxidizing properties. The liquid is assumed to contain a mixture of ammonium hypobromite and bromide. C. F. Schonbein likewise inferred the transient formation of ammonium hypoiodite when iodine water and aqueous ammonia are mixed, whereby the liquid is decolorized. The soln. gave a deep blue coloration with starch paste and potassium iodide, etc., and behaved like analogous soln. of the alkali... 

Ammonium hypoiodite.—A very unstable solution of the hypoiodite is probably formed by addition of excess of ammonium hydroxide to an aqueous solution of iodine. The solution exerts a powerful bleaching action, but rapidly decomposes into iodine and iodate.5... 

All forms of iodine including the elemental iodine, hypoiodous acid (HOI), hypoiodite anion (OI ), free iodide anion (I-), and triiodide anion (I3 ) in water also may be measured by the Leuco crystal violet method. The sample is treated with potassium peroxymonosulfate to oxidize all iodide species in the sample. It then is treated with leukocrystal violet reagent for color development. Interference from free chlorine may be eliminated by addition of an ammonium salt. 

Reaction of 6 (3-hydroxy-steroids with ceric ammonium nitrate was reported to give the 6(3, 19-epoxides,123 and fragmentation of 5- and 19-hydroxy-compounds were also reported. A detailed investigation of the hypoiodite reaction and the related Pb(OAc)4 oxidation of a 5a-bromo-6(3-hydroxy-compound indicated that for the former a halocarbon solvent promotes 6(3,19-epoxide formation.124 Photolysis of the 17a-iodobenzoate (148) with PhICI2 gave the 9 -chloro-derivative (149) which on thermolysis gave a good yield of the 9(11), 16-diene (150).125 Photolysis of... 

The hypoiodite reaction is quite selective for magnesium. Considerable quantities of reducing agents, ammonium and aluminum salts, and such ions which form colored hydroxides or higher oxides interfere with the test. Phosphate and oxalate ions interfere by yielding crystalline magnesium phosphate and oxalate. In contrast to the surface-rich hydroxide, these products are not capable of adsorbing free iodine. 

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