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Description

Phosphotungstic acid hydrate is a heteropolyacid.

Specifications

Grade High Purity
Formula H3PO4·12WO3·xH2O
MW 2880.17
CAS 12501-23-4
Appearance Off-White to pale yellow crystalline powder
Turning yellow on exposure to light
Assay (with Cinchonine) 65.0% ~ 70.0%
Insoluble Matter ≤0.020%
Chloride (Cl) ≤0.030%
Nitrate (NO3) ≤0.010%
Sulfate (SO4) ≤0.020%
Ammonium (NH4) ≤0.005%
Heavy Metals (as Pb) ≤0.005%
Iron (Fe) ≤0.002%
Storage R.T

 

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.

Documents

COA

SDS

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