Silver permanganate

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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 

3D model (JSmol)
  • Interactive image
ChemSpider
  • 9599554
ECHA InfoCard 100.029.127
EC Number
  • 232-040-1

PubChem CID
  • 11424678
UNII
  • A61162P82P 

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

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

AgNO3 + KMnO4 → AgMnO4 + KNO3