How do you dissolve phosphotungstic acid?

Dissolve 0.5 g of phosphotungstic acid (PTA) in 50 mL of water to give a 1% (w/v) solution. (This takes 10–15 min at room temperature with agitation.)

What is phosphotungstic acid used for?

Phosphotungstic acid is used in histology as a component for staining of cell specimens, often together with haematoxylin as PTAH. It binds to fibrin, collagen, and fibres of connective tissues, and replaces the anions of dyes from these materials, selectively decoloring them.

Is phosphotungstic acid toxic?

Ingestion: Phosphotungstic acid is not especially toxic but it can act as an irritant to the gastrointestinal tract. Abdominal pain, vomiting or diarrhea may follow large ingestions.

How does phosphotungstic acid work in aqueous solution?

Phosphotungstic acid is a strong oxidizing agent in aqueous solutions. Substance itself is noncombustible but may decompose upon heating above 400 °C to give toxic and/or irritating fumes.

Which is the correct formula for phosphotungstic acid hydrate?

Phosphotungstic acid hydrate PubChem CID 16212977 Synonyms Phosphotungstic acid hydrate 12501-23-4 Molecular Weight 2898 Component Compounds CID 14811 (Tungsten trioxide) CID 1004 ( Date s Modify 2021-05-15 Create 2007-07-12

How is phosphotungstic acid used as a superacid?

It has been utilized as a superacid for isomerization of cycloalkanes, as an acid catalyst for Prins cyclization reactions, dehydration of alcohols, hydration of olefins, and has also been utilized in oxidations of ketones to aldehydes and carboxylic acids)

How to purify phosphotungstic acid with diethyl ether?

Purification: a few drops of conc. nitric acid (HNO 3) are added to 100 g of phosphotungstic acid dissolved in 75 mL of water in a separatory funnel, and the solution is extracted with diethyl ether.