Phosphotungstic acid is a kind of pale-white powder with acidity and oxidation-reduction quality. Its chemical formula is H3O40PW12, melting point is 89°C, and CAS No. is 12067-99-1. It is slight weathering, soluble in alcohol, ether and water, and dissolved in about 0.5 parts water.
Phosphotungstic acid can be applied as multidingal new type catalyst of high catalytic property, and even can be used as a phase transfer catalyst. It is a type of green catalyst that is stable and is friendly to environment.
Chemical Properties
1. Free acid is a strong acid.
2. Aqueous solution is a strong oxidant.
3. It is unstable in most common metal, metal oxide and carbonate.
4. Should be avoided in sulfuric acid, ammonia, aromatic amine, amino compounds, organic acid anhydride and epichlorohydrin.
Applications
1. For biological reagent.
2. Used as a newly developed catalyst for the organic synthesis reaction.
3. Applied as biochemical reagents and chromatography reagents.
4. For the production of pigment.
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