ammonium iodide

{{chembox

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 470456251

| Name = Ammonium iodide

| ImageFileL1 = Ammonium.svg

| ImageSizeL1 = 90px

| ImageNameL1 = The ammonium cation

| ImageFileR1 = I-.svg

| ImageSizeR1 = 20px

| ImageNameR1 = The iodide anion

| ImageFile2 = Ammonium-iodide-3D-balls.png

| ImageSize2 = 180px

| ImageName2 = ball-and-stick model of an ammonium cation (left) and an iodide anion (right)

| ImageName = Ammonium iodide

|Section1={{Chembox Identifiers

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = OZ8F027LDH

| InChI = 1/HI.H3N/h1H;1H3

| SMILES = [I-].[NH4+]

| InChIKey = UKFWSNCTAHXBQN-UHFFFAOYAU

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/HI.H3N/h1H;1H3

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = UKFWSNCTAHXBQN-UHFFFAOYSA-N

| CASNo = 12027-06-4

| CASNo_Ref = {{cascite|correct|CAS}}

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID =23785

| PubChem = 25487

}}

|Section2={{Chembox Properties

| Formula = NH₄I

| MolarMass = 144.94 g/mol

| Appearance = White crystalline powder

| Density = 2.51 g/cm³

| Solubility = 155 g/100 mL (0 °C)
172 g/100 mL (20 °C)
250 g/100 mL (100 °C)

| MeltingPtC = 551

| MeltingPt_notes = (sublimes)

| BoilingPtC = 235

| BoilingPt_notes = (in vacuum)

| MagSus = {{val|-66.0e-6|u=cm³/mol}}

}}

|Section7={{Chembox Hazards

| ExternalSDS =

| MainHazards =

| NFPA-H = 2

| NFPA-F = 0

| NFPA-R = 0

| FlashPt = Non-flammable

}}

|Section8={{Chembox Related

| OtherAnions = Ammonium fluoride
Ammonium chloride
Ammonium bromide

| OtherCations = Sodium iodide
Potassium iodide
Phosphonium iodide

| OtherCompounds =

}}

}}

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.Holleman, A. F.; Wiberg, E. Inorganic Chemistry Academic Press: San Diego, 2001. {{ISBN|0-12-352651-5}}. 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{{Cite book |url=https://onlinelibrary.wiley.com/doi/book/10.1002/0471238961 |title=Kirk-Othmer Encyclopedia of Chemical Technology |date=2001-01-26 |publisher=Wiley |isbn=978-0-471-48494-3 |editor-last=Kirk-Othmer |edition=1 |language=en |doi=10.1002/0471238961.0113131523051920.a01.pub2}}