Tungstosilicic acid hydrate

ALDRICH/95395 - purum p.a.

Synonym: Silicotungstic acid

CAS Number: 12027-43-9
Empirical Formula (Hill Notation): H₄O₄₀SiW₁₂ · xH₂O
Molecular Weight: 2878.17 (anhydrous basis)
MDL Number: MFCD00150392
Linear Formula: H₄[Si(W₃O₁₀)₄] · xH₂O
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-95395-50G	50 g	$112.00 1/EA	Add To Favorites
45-95395-250G	250 g	$330.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

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
form	powder or crystals
grade	purum p.a.
InChI	1S/H4O4Si.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h1-4H;1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
InChI key	ACTPFSYIGLFGLY-UHFFFAOYSA-N
loss	≤20% loss on ignition
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
solubility	water: 0.1 g/mL, clear, colorless

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

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

UNSPSC

12352301

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