Silver permanganate

{{Chembox

| Name =

| ImageFile = Silver permanganate.png

| ImageSize = 150px

| IUPACName = Silver(I) permanganate

| OtherNames = Argentous permanganate

| SystematicName = Silver(I) manganate(VII)

| Section1 = {{Chembox Identifiers

| CASNo = 7783-98-4

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

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

| UNII = A61162P82P

| PubChem = 11424678

| ChemSpiderID = 9599554

| EINECS = 232-040-1

| SMILES = [Ag+].[O-][Mn](=O)(=O)=O

| InChI = 1/Ag.Mn.4O/q+1;;;;;-1/rAg.MnO4/c;2-1(3,4)5/q+1;-1

| InChIKey = FBDQITNNUANGAD-URBVJNAFAD

| StdInChI = 1S/Ag.Mn.4O/q+1;;;;;-1

| StdInChIKey = FBDQITNNUANGAD-UHFFFAOYSA-N

}}

| Section2 = {{Chembox Properties

| Formula = AgMnO₄

| MolarMass = 226.804 g/mol

| Appearance = purple crystals or gray powder

| Density = 4.27 g/cm³

| MeltingPtC = 160

| MeltingPt_notes = (decomposes)

| BoilingPtC =

| Solubility = 0.55 g/100 mL (0 °C)
1.69 g/100 mL (30 °C)

| MagSus = −63.0·10⁻⁶ cm³/mol

}}

| Section3 = {{Chembox Structure

| CrystalStruct = monoclinic

}}

| Section4 =

| Section5 =

| Section6 =

| Section7 = {{Chembox Hazards

| MainHazards = Eye irritant

| GHSPictograms = {{GHS03}} {{GHS07}}

| GHSSignalWord = Warning

| HPhrases = {{H-phrases|272|312|319|332|}}

| PPhrases = {{P-phrases|210|220|261|264|270|271|280|301+310|302+352|304+340|305+351+338|311|321|330|337+313|362+364|370+378|501}}

| FlashPt =

| AutoignitionPt =

}}

}}

Silver permanganate is an inorganic compound with the chemical formula AgMnO₄. This salt is a purple crystal adopting a monoclinic crystal system.{{cite journal|last=Boonstra|first=E. G.|title=The crystal structure of silver permanganate|journal=Acta Crystallographica Section B|date=14 August 1968|volume=24|issue=8|pages=1053–1062|doi=10.1107/S0567740868003699|bibcode=1968AcCrB..24.1053B }} It decomposes when heated or mixed with water, and heating to high temperature may lead to explosion. The compound is used in gas masks.{{citation needed|date=December 2021}}