708348

Silicomolybdic acid solution

• Synonym(s): Keggin heteropoly acid
• Linear Formula: H₄SiO₄ · 12MoO₃
• CAS Number: 11089-20-6
• MDL number: MFCD00054151
• UNSPSC Code: 12352301
• PubChem Substance ID: 329762788
• NACRES: NA.22

Properties

• form: liquid
• Quality Level: 100
• refractive index: n20/D 1.376
• density: 1.156 g/mL at 25 °C
• SMILES string: O[Mo](=O)(=O)O[Mo](=O)(=O)O[Mo](=O)(=O)O[Si](O[Mo](=O)(=O)O[Mo](=O)(=O)O[Mo](O)(=O)=O)(O[Mo](=O)(=O)O[Mo](=O)(=O)O[Mo](O)(=O)=O)O[Mo](=O)(=O)O[Mo](=O)(=O)O[Mo](O)(=O)=O
• InChI: 1S/12Mo.O4Si.4H2O.32O/c;;;;;;;;;;;;1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h;;;;;;;;;;;;;4*1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/q;;;;8*+1;-4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/p-4
• InChI key: LMAWUDMBHTZUCF-UHFFFAOYSA-J

Description

Application

Reactant for:

• Use in electrostatic synthesis of compounds comprising ultrathin layers of silicododecamolybdate anions and poly(allyl ammonium) cations
• Preparation of charge transfer compounds with Keggin anions and 2,2′-biquinolinium

Silicomolybdic acid (Keggin Acid, SMA) can be used to prepare supported acid catalysts for various organic transformations. For example, it is used to prepare:

• SMA immobilized on mesoporous silica spheres for hydrolysis of ammonia borane.
• SMA doped carbon-ceramic composite electrodes for electrocatalytic reduction of bromate.
• SMA supported on silica gel (SiO₂) for Hosomi–Sakurai allylation of carbonyl compounds.
• SMA supported on mesoporous SiO₂ hollow spheres for Friedel–Crafts alkylation reaction.

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: 12 - Non Combustible Liquids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable