Uranyl iodide acid salt

Pure uranous compounds may be prepared by precipitating U(OH)4 from aqueous solution with ammonium hydroxide and dissolving the precipitate in the appropriate acid. Uranous sulfate, the most common salt, is soluble in water, as are the chloride, bromide, and iodide. Uranous nitrate is unstable, gradually undergoing oxidation to uranyl nitrate with liberation of oxides of nitrogen. 

Solutions of uranyl salts can be readily prepared by dissolving UO3 in the appropriate acid. Uranyl nitrate, sulfate, acetate, fluoride, chloride, bromide, and iodide aU are very soluble, the solutions having a characteristic yellow-green fluorescence. Uranyl nitrate can be made by dissolving uranium metal or any of the oxides in nitric acid. It crystallizes from solution as the well-formed yellow uranyl nitrate hexahydrate U02(N03)2 6H2 0, often called UNH. 

Uranyl solutions are easily prepared by dissolution of water-soluble salts the nitrate, fluoride, chloride, bromide, iodide, sulfate, and acetate. Other water-soluble uranyl salts Include those of other organic acids the formate, propionate, butyrate, emd valerate and certain double salts such as potassliun uranyl sulfate, sodium uranyl carbonate, sodium uranyl chromate, etc. Uranyl solutions may be prepared also by dissolution of a uranium(VI) compound in an appropriate solvent, by dissolution of a lower valence uranium compound in an oxidizing medium, or by oxidation of lower valence uranium ions already in solution. Uranyl solutions are yellow in color. They are the most stable of uranlvim solutions. As indicated in preceding paragraphs, the... 

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