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T2786

Sigma-Aldrich

Tungstosilicic acid hydrate

Sinônimo(s):

Silicotungstic acid

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10 G
R$ 619,00
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Disponível para enviar em07 de abril de 2025Detalhes


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10 G
R$ 619,00
50 G
R$ 1.207,00

About This Item

Fórmula linear:
H4[Si(W3O10)4] · xH2O
Número CAS:
Peso molecular:
2878.17 (anhydrous basis)
Número CE:
Número MDL:
Código UNSPSC:
12352301
ID de substância PubChem:
NACRES:
NA.22

R$ 619,00


Disponível para enviar em07 de abril de 2025Detalhes


Solicite uma grande encomenda

Formulário

powder

solubilidade

water: 100 mg/mL, clear, colorless

cadeia de caracteres SMILES

O.O[Si](O)(O)O.O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1.O=[W]2(=O)O[W](=O)(=O)O[W](=O)(=O)O2.O=[W]3(=O)O[W](=O)(=O)O[W](=O)(=O)O3.O=[W]4(=O)O[W](=O)(=O)O[W](=O)(=O)O4

InChI

1S/H4O4Si.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h1-4H;1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

chave InChI

ACTPFSYIGLFGLY-UHFFFAOYSA-N

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Descrição geral

Tungstosilicic acid hydrate is widely used as a catalyst in esterification, oxidation, and other chemical reactions.[1][2]

Aplicação

Reactant for:
  • Preparation of silicotungstate butylmethylimidazolium bromide ionic liquid hybrid material
  • Synthesis of SnII-substituted Keggin-type polyoxometalates as photocatalysts
  • Preparation of silicotungstic acid/organically modified silane proton-conducting membranes
  • Preparation of charge transfer compounds with Keggin anions
  • Preparation of catalyst for catalytic liquid-phase oxidation of xylene
Tungstosilicic acid can be used as a reactant for:
  • Preparation of silicotungstate butylmethylimidazolium bromide ionic liquid hybrid material.[3]
  • Synthesis of Sn(II)-substituted Keggin-type polyoxometalates as photocatalysts.[4]
  • Preparation of silicotungstic acid/organically modified silane proton-conducting membranes.[5][6]
  • Preparation of charge transfer compounds with Keggin anions.[7]
  • Preparation of catalyst for catalytic liquid-phase oxidation of xylene.[8]

Pictogramas

Exclamation mark

Palavra indicadora

Warning

Frases de perigo

Classificações de perigo

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Órgãos-alvo

Respiratory system

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves


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Synthesis, properties and photochromism of novel charge transfer compounds with Keggin anions and protonated 2, 2?-biquinoline.
Gamelas J A, et al.
Polyhedron, 21(25-26), 2537-2545 (2002)
Catalytic liquid phase oxidation of p-xylene using transition metal substituted polyoxometalates.
Alekar N A, et al.
Indian Journal of Chemistry, 39A, 439-441 (2000)
Silicotungstic acid/organically modified silane proton-conducting membranes.
Stangar U L, et al.
Journal of Solid State Electrochemistry, 9(2), 106-113 (2005)
Silicotungstic acid supported zirconia: An effective catalyst for esterification reaction
KM Parida, et al.
Journal of Molecular Catalysis. B, Enzymatic, 275, 77-83 (2007)
Synthesis of proton conducting tungstosilicate mesoporous materials and polymer composite membranes.
Feng F, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 81(1-3), 217-234 (2005)

Questions

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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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