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Topic summary

Silver oxide

Silver oxide
Names IUPAC name
Silver(I) oxide
Other names
Silver rust, Argentous oxide, Silver monoxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard100.039.946EC Number
  • 243-957-1
MeSHsilver+oxide
RTECS number
  • VW4900000
UNII
  • InChI=1S/2Ag.O/q2*+1;-2
    Key: NDVLTYZPCACLMA-UHFFFAOYSA-N
  • InChI=1S/2Ag.O/q2*+1;-2
    Key: NDVLTYZPCACLMA-UHFFFAOYSA-N
  • [O-2].[Ag+].[Ag+]
Properties Ag2OMolar mass231.735 g·mol Appearance Black/brown cubic crystals OdorOdorless Density7.14 g/cm Melting pointdecomposes from ≥350 °C 0.013 g/L (20 °C)
0.025 g/L (25 °C)
0.053 g/L (80 °C)
Solubility product (Ksp) of AgOH
1.52·10 (20 °C) SolubilitySoluble in acid, alkali
Insoluble in ethanolAcidity (pKa) 12.1 (estimated) −134.0·10 cm/mol Structure CubicPn3m, 224 Thermochemistry 65.9 J/mol·K 122 J/mol·K −31 kJ/mol −11.3 kJ/mol Hazards GHS labelling: DangerH272, H315, H319, H335P220, P261, P305+P351+P338NFPA 704 (fire diamond)
2
0
1
Lethal dose or concentration (LD, LC): 2.82 g/kg (rats, oral) Related compounds
Related compounds
Silver(I,III) oxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Silver oxide is the chemical compound with the formulaAg2O. It is a fine black or dark brown powder that is used to prepare other silver compounds.

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