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Silver tungstate

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Silver tungstate
Names
IUPAC name Disilver;dioxido(dioxo)tungsten
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.357 Edit this at Wikidata
EC Number
  • 236-708-3
PubChem CID
InChI
  • InChI=1S/2Ag.4O.W/q2*+1;;;2*-1;Key: QEKREONBSFPWTQ-UHFFFAOYSA-N
SMILES
  • (=O)(=O)..
Properties
Chemical formula Ag2WO4
Molar mass 463.57 g mol
Hazards
GHS labelling:
Pictograms GHS07: Exclamation mark
Signal word Warning
Hazard statements H315, H319, H335
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Silver tungstate is an inorganic tungstate with the chemical formula Ag2WO4. It has been applied in various fields such as photoluminescence, antibacterial action, ozone gas sensors and humidity sensors. It is also used in the electronic and chemical industries, and also used in proteomics research.

Phases

Silver tungstate occurs in three polymorphic phases: orthorhombic (α), hexagonal (β) and cubic (γ). α-silver tungstate is thermodynamically stable, while β- and γ-silver tungstate are metastable.

Synthesis

Silver tungstate is synthesised through the following reaction between silver nitrate and sodium tungstate, producing sodium nitrate as a byproduct:

2 AgNO 3 + Na 2 WO 4 ⟶ Ag 2 WO 4 + 2 NaNO 3 {\displaystyle {\ce {2AgNO3 + Na2WO4 -> Ag2WO4 + 2NaNO3}}}

References

  1. "C&L Inventory". echa.europa.eu.
  2. ^ Sreedevi, A.; Priyanka, K. P.; Babitha, K. K.; Aloysius Sabu, N.; Anu, T. S.; Varghese, T. (2015-09-01). "Chemical synthesis, structural characterization and optical properties of nanophase α-Ag2WO4". Indian Journal of Physics. 89 (9): 889–897. Bibcode:2015InJPh..89..889S. doi:10.1007/s12648-015-0664-1. ISSN 0974-9845. S2CID 122042870.
  3. De Santana, Yuri V. B.; Gomes, José Ernane Cardoso; Matos, Leandro; Cruvinel, Guilherme Henrique; Perrin, André; Perrin, Christiane; Andrès, Juan; Varela, José A.; Longo, Elson (2014-01-01). "Silver Molybdate and Silver Tungstate Nanocomposites with Enhanced Photoluminescence". Nanomaterials and Nanotechnology. 4: 22. doi:10.5772/58923. hdl:10234/121786. ISSN 1847-9804. S2CID 7415517.
  4. "13465-93-5 - Silver tungsten oxide, 99% (metals basis) - Silver tungstate - 39661 - Alfa Aesar". www.alfa.com. Retrieved 2022-08-29.
  5. Alvarez Roca, Roman; Lemos, Pablo S.; Gracia, Lourdes; Andrés, Juan; Longo, Elson (2016-10-03). "Uncovering the metastable γ-Ag2WO4 phase: a joint experimental and theoretical study". RSC Advances. 7 (10): 5610–5620. Bibcode:2017RSCAd...7.5610R. doi:10.1039/C6RA24692C. hdl:10234/167867.
Silver compounds
Silver(0,I)
Silver(I)
Organosilver(I) compounds
  • AgC2H3O2
  • AgC22H43O2
  • CH3CH(OH)COOAg
  • C
    18H
    36AgO
    2
  • AgC4H3N2NSO2C6H4NH2
  • AgC
    11H
    23COO
    • Silver(II)
    Silver(III)
    Silver(I,III)
    Tungstate salts
    H He
    Li2WO4 Be B C N O F Ne
    Na2WO4 Mg Al Si P S Cl Ar
    K2WO4 CaWO4 Sc Ti V Cr MnWO4 FeWO4
    Fe2(WO4)3     		CoWO4 NiWO4 CuWO4 ZnWO4 Ga Ge As Se Br Kr
    Rb Sr Y Zr(WO4)2 Nb Mo Tc Ru Rh Pd Ag2WO4 CdWO4 In2(WO4)3 Sn Sb Te I Xe
    Cs2WO4 BaWO4 * Lu Hf Ta W Re Os Ir Pt Au Hg Tl PbWO4 Bi Po At Rn
    Fr RaWO4 ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
     
    * La2(WO4)3 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb
    ** Ac Th Pa UO2WO4 Np Pu Am Cm Bk Cf Es Fm Md No


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