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Ammonium iodide

172 g/100 mL (20 °C) 250 g/100 mL (100 °C) | NFPA-H = 2 | NFPA-F = 0 | NFPA-R = 0 Ammonium chloride Ammonium bromide Potassium iodide Phosphonium iodide Ammonium iodide is the inorganic compound with the formula NH4I. A white solid. It is an ionic compound, although impure samples appear yellow. This salt consists of ammonium cation and an iodide anion. It can be prepared by the action of hydroiodic acid on ammonia. It is easily soluble in water, from which it crystallizes in cubes. It is also soluble in ethanol. Ammonium iodide in aqueous solutions are observed as acidic and display elevated vapor pressures at high temperatures.

Preparation

Ammonium iodide can be made in lab by treating ammonia with hydroiodic acid: :NH3 + HI → NH4I

Uses

Ammonium iodide is used as dietary supplement to treat iodine deficiency.

Properties and reactions

Vinyl sulfones have been prepared using ammonium iodide.

In green chemistry, ammonium iodide and an oxidant (e.g., H2O2) cleanly iodinate ketones and aromatic compounds.

References

References

  1. Holleman, A. F.; Wiberg, E. ''Inorganic Chemistry'' Academic Press: San Diego, 2001. {{ISBN. 0-12-352651-5.
  2. (2001-01-26). "Kirk-Othmer Encyclopedia of Chemical Technology". Wiley.
  3. "Ammonium Iodide: Benefits, Risks, and Safety in Dietary Supplements".
  4. (2015). "Ammonium iodide-induced sulfonylation of alkenes with DMSO and water toward the synthesis of vinyl methyl sulfones". Chemical Communications.
  5. (2013). "Cyclization of 2′-hydroxychalcones to flavones using ammonium iodide as an iodine source: An eco-friendly approach". Journal of the Serbian Chemical Society.
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iodides nonmetal-halides ammonium-compounds
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