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T2786

Sigma-Aldrich

Tungstosilicic acid hydrate

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Synonym(s):
Silicotungstic acid
Linear Formula:
H4[Si(W3O10)4] · xH2O
CAS Number:
Molecular Weight:
2878.17 (anhydrous basis)
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

form

powder

solubility

water: 100 mg/mL, clear, colorless

SMILES string

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

InChI key

ACTPFSYIGLFGLY-UHFFFAOYSA-N

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This Item
7969095395383341
solubility

water: 100 mg/mL, clear, colorless

solubility

water: 0.5 g/10 mL, clear, colorless

solubility

water: 0.1 g/mL, clear, colorless

solubility

-

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

General description

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

Application

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.
  • Synthesis of Sn(II)-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.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

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

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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