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Merck

P4006

Phosphotungstic acid hydrate

reagent grade

Synonym(s):

Tungstophosphoric acid

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About This Item

Linear Formula:
H3[P(W3O10)4] · xH2O
CAS Number:
Molecular Weight:
2880.05 (anhydrous basis)
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352300
MDL number:
Form:
powder
Grade:
reagent grade
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grade

reagent grade

Quality Level

form

powder

pH

2 (20 °C)

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

InChI

1S/H3O4P.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h(H3,1,2,3,4);1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

InChI key

AVFBYUADVDVJQL-UHFFFAOYSA-N

General description

Phosphotungstic acid hydrate is a heteropolyacid.

Application

Phosphotungstic acid hydrate may be used as a staining agent for the transmission electron microscope (TEM) imaging of cetyltrimethylammonium bromide (CTAB) coated gold nanorods.
It may be used in the preparation of:
  • Phosphotungstic acid doped ormosil hybrid networks.
  • Niobia supported phosphotungstic acid (PTA) catalysts.
  • Titanium dioxide (TiO2) nanoparticles /phosphotungstic acid (HPW) films.


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Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1C

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges



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Photoactive layer-by-layer films of cellulose phosphate and titanium dioxide containing phosphotungstic acid.
Ullah S, et al.
Applied Surface Science, 277, 111-120 (2013)
Preparation, characterization and photochromic behavior of phosphotungstic acid-ormosil nanocomposites.
Ferreira-Neto EP, et al.
Materials Chemistry and Physics, 153, 410-421 (2015)
Competitive Reaction Pathway for Site-Selective Conjugation of Raman Dyes to Hotspots on Gold Nanorods for Greatly Enhanced SERS Performance.
Huang H, et al.
Small, 10(19), 4012-4019 (2014)