Phosphotungstic Acid

Phosphotungstic Acid

Phosphotungstic acid (H₃PW₁₂O₄₀), also known as tungstophosphoric acid, is a strong, heteropoly acid in the form of a concentrated aqueous solution.

Chemical Formula: H₃PW₁₂O₄₀

CAS Number: 12067-99-1

Grade: Reagent

Appearance: White or yellowish crystalline solid.

Uses:

• Catalyst: Primarily used as a heterogeneous catalyst in various chemical reactions.

• Staining agent: In some cases, used as a negative stain for electron microscopy, that helps to visualize biological samples like viruses and membranes by contrasting them against the dark background.

Industries and Common Applications:

• Chemical Industry: The primary user of phosphotungstic acid, particularly as a catalyst in various chemical reaction processes for producing various products.

• Laboratory Research: Limited use in some specific electron microscopy applications for research purposes.