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Iodine crystals 99.8% lab reagent min order: 250gram payment we accept Paypal Elemental iodine is used as a disinfectant in various forms. The iodine exists as the element, or as the water soluble anion I3- generated in situ by adding to poorly water-soluble elemental iodine (the reverse chemical reaction makes some free elemental iodine available for antisepsis). Alternatively, iodine may come from , which contain iodine complexed with a solubilizing agent (iodide ion may be thought of loosely as the iodophor in triiodide water solutions). Examples of such preparations include: : iodine in ethanol, or iodine and in a mixture of ethanol and water. : iodine and iodide in water alone, forming mostly triiodide. Unlike tincture of iodine, Lugol's has a minimized amount of the free iodine (I2) component. Povidone iodine (an )