Silver permanganate

Silver permanganate is an inorganic compound with the chemical formula AgMnO₄. This salt is a purple crystal adopting a monoclinic crystal system.^[1] 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]}

Silver permanganate

Names
IUPAC name Silver(I) permanganate
Systematic IUPAC name Silver(I) manganate(VII)
Other names Argentous permanganate
Identifiers
CAS Number	7783-98-4 Y
3D model (JSmol)	Interactive image
ChemSpider	9599554
ECHA InfoCard	100.029.127
EC Number	232-040-1
PubChem CID	11424678
UNII	A61162P82P Y
CompTox Dashboard (EPA)	DTXSID10228455
InChI InChI=1S/Ag.Mn.4O/q+1;;;;;-1 Key: FBDQITNNUANGAD-UHFFFAOYSA-N InChI=1/Ag.Mn.4O/q+1;;;;;-1/rAg.MnO4/c;2-1(3,4)5/q+1;-1 Key: FBDQITNNUANGAD-URBVJNAFAD
SMILES [Ag+].[O-][Mn](=O)(=O)=O
Properties
Chemical formula	AgMnO4
Molar mass	226.804 g/mol
Appearance	purple crystals or gray powder
Density	4.27 g/cm3
Melting point	160 °C (320 °F; 433 K) (decomposes)
Solubility in water	0.55 g/100 mL (0 °C) 1.69 g/100 mL (30 °C)
Magnetic susceptibility (χ)	−63.0·10−6 cm3/mol
Structure
Crystal structure	monoclinic
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Eye irritant
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H272, H312, H319, H332
Precautionary statements	P210, P220, P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P311, P321, P330, P337+P313, P362+P364, P370+P378, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Production

It can be produced through the reaction of silver nitrate and potassium permanganate:^[2]

AgNO₃ + KMnO₄ → AgMnO₄ + KNO₃