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	$200.00 1/EA	Add To Favorites
45-455970-50G	50 g	$710.00 1/EA	Add To Favorites

ATR-IR Spectra for Tungstophosphoric acid.

This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.

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.)
Quality Level	100
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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