T2786

Tungstosilicic acid hydrate

• Synonym(s): Silicotungstic acid
• Linear Formula: H₄[Si(W₃O₁₀)₄] · xH₂O
• CAS Number: 12027-43-9
• Molecular Weight: 2878.17 (anhydrous basis)
• EC Number: 234-719-8
• MDL number: MFCD00150392
• UNSPSC Code: 12352301
• PubChem Substance ID: 24900077
• NACRES: NA.22

Properties

• 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

Description

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.

Safety Information

• Pictograms: GHS07
• Signal Word: Warning
• Hazard Statements: H315,H319,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• 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