95395

Tungstosilicic acid hydrate

purum p.a.

• Synonym(s): Silicotungstic acid
• Linear Formula: H₄[Si(W₃O₁₀)₄] · xH₂O
• CAS Number: 12027-43-9
• Molecular Weight: 2878.17 (anhydrous basis)
• MDL number: MFCD00150392
• UNSPSC Code: 12352301
• PubChem Substance ID: 57653678
• NACRES: NA.22

Properties

• grade: purum p.a.
• form: powder or crystals
• loss: ≤20% loss on ignition
• solubility: water: 0.1 g/mL, clear, colorless
• anion traces: chloride (Cl^-): ≤200 mg/kg; sulfate (SO₄^2-): ≤100 mg/kg
• cation traces: Ca: ≤200 mg/kg; Cd: ≤50 mg/kg; Co: ≤50 mg/kg; Cu: ≤50 mg/kg; Fe: ≤50 mg/kg; K: ≤200 mg/kg; Na: ≤3000 mg/kg; Ni: ≤50 mg/kg; Pb: ≤50 mg/kg; Zn: ≤50 mg/kg
• 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

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves