Phosphotungstic acid hydrate
Phosphotungstic acid hydrate (CAS: 12501-23-4), with the formula H3[P(W3O10)4] · xH2O and an anhydrous molar mass of 2880.05 g/mol, is a dense, white, crystalline inorganic acid. It is known for its strong acidity and its ability to form heteropoly acids. Primarily utilised in chemical synthesis and as a reagent in various analytical and catalytic applications, it serves as a valuable component in laboratory and industrial settings.
- IUPAC
- Tungstophosphoric acid
- Synonyms
- Tungstophosphoric acid
![Phosphotungstic acid hydrate (H3[P(W3O10)4] · xH2O) — chemical structure, CAS 12501-23-4; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F12501-23-4.png&w=3840&q=75)
Catalysis
Phosphotungstic acid hydrate can serve as a catalyst in various organic reactions. Its acidic nature and heteropoly structure make it suitable for promoting specific chemical transformations.
Analytical Reagent
It is employed as a reagent in analytical chemistry, particularly for the gravimetric determination of certain substances. Its properties allow for selective precipitation.
Chemical Synthesis
This compound is used as a building block or reagent in the synthesis of other complex inorganic and organic compounds. It is a key component in the preparation of various tungsten-containing materials.
Pigment Production
Historically and in some specialised applications, phosphotungstic acid has been used in the production of pigments, contributing to specific colouristic properties.
| Molecular weight | 2880.05 (anhydrous basis) |
|---|---|
| Linear formula | H3[P(W3O10)4] · xH2O |
| Assay | 99.5% |
| Melting point | ~95 °C(lit.) |
Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Transport (UN / ADR) | UN 3260 8 / PGII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Phosphotungstic acid hydrate used for?
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Phosphotungstic acid hydrate is primarily used in chemical synthesis and as a reagent in analytical chemistry, including gravimetric analysis and as a catalyst in certain reactions.
What is the CAS number and chemical formula for Phosphotungstic acid hydrate?
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The CAS number is 12501-23-4, and the chemical formula is H3[P(W3O10)4] · xH2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phosphotungstic acid hydrate with an assay of 99.5%. This product is supplied for technical and research purposes and is not represented as USP, BP, EP, or other pharmacopoeial grades.
How should Phosphotungstic acid hydrate be handled?
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Phosphotungstic acid hydrate is corrosive and causes severe skin burns and eye damage (H314). Always wear appropriate protective equipment, including gloves, eye protection, and protective clothing. In case of contact with eyes, rinse cautiously with water for several minutes and seek immediate medical attention.
Is Phosphotungstic acid hydrate a controlled substance?
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The provided data does not indicate that Phosphotungstic acid hydrate is a controlled substance.
How is Phosphotungstic acid hydrate shipped?
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This product is classified under UN 3260, Packing Group II, for transport, indicating it requires specific handling as a corrosive solid, acidic, inorganic, n.o.s.
How can I request a quote or sample?
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Please contact our sales team through the website to request a quote or a sample of Phosphotungstic acid hydrate.
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