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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:
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Phosphotungstic acid doped ormosil hybrid networks.
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Niobia supported phosphotungstic acid (PTA) catalysts.
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Titanium dioxide (TiO2) nanoparticles /phosphotungstic acid (HPW) films.
Documents
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