Phosphotungstic acid hydrate

ALDRICH/455970 - 99.995% trace metals basis (Purity excludes up to 300 ppm Si)

Synonym: Tungstophosphoric acid

CAS Number: 12501-23-4
Empirical Formula (Hill Notation): H₃O₄₀PW₁₂ · xH₂O
Molecular Weight: 2880.05 (anhydrous basis)
MDL Number: MFCD00149915
Linear Formula: H₃[P(W₃O₁₀)₄] · xH₂O
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-455970-10G	10 g	$188.00 1/EA	Add To Favorites
45-455970-50G	50 g	$667.00 1/EA	Add To Favorites

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This image depicts SKU: 455970-50G

Properties
Descriptions
Safety Info.
Basic Data

assay	99.995% trace metals basis (Purity excludes up to 300 ppm Si)
form	powder or crystals
impurities	≤55.0 ppm Trace Metal Analysis
InChI	1S/H3O4P.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h(H3,1,2,3,4);1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
InChI key	AVFBYUADVDVJQL-UHFFFAOYSA-N
mp	~95 °C (lit.)
SMILES string	O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O
technique(s)	blocking: suitable

Application:

The acid selectively blocks dye components from staining the tissue by either binding to it or by acting as a mordant. It may be used a recyclable superacid catalyst for isomerization reaction of cycloalkanes. It may simply be used as an acid catalyst for the following reactions:
• Prins cyclization reaction
• dehydration of alcohols
• hydration of olefins.3
Phosphotungstic acid based membranes may be used for fuel cell applications.

Packaging:

10, 50 g in poly bottle

Symbol	GHS05,GHS07,GHS09
Signal word	Danger
Hazard statements	H302 - H314 - H411
Precautionary statements	P260 - P273 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
Hazard Codes	C
Risk Statements	34
Safety Statements	26-36/37/39
RIDADR	UN 3260 8 / PGII
WGK Germany	WGK 3
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

Purity	99.995% trace metals basis (Purity excludes up to 300 ppm Si)
mp	~95 °C (lit.)
UNSPSC	12352302

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