Phosphotungstic acid
Buy Phosphotungstic acid (CAS 12501-23-4) from Zemixal. Request a quote with price, lead time and documents. Packs from 25 g.
About Phosphotungstic acid
Zemixal supplies Phosphotungstic acid within its inorganic Chemicals, Metals & Advanced Materials portfolio. Identity at a glance: CAS 12501-23-4, formula H5O41PW12 and molar mass 2898.1 g/mol. Typical appearance is white to yellow to beige to grey powder or crystals.
Use cases we see most often
- Biological staining
- Materials research
Safe handling
Classified under GHS with signal word Danger and hazard statements H302, H314, H318 and H411. Read the SDS before first use. For transport it ships as UN UN 3260.
Order it in 25 g, 100 g, 500 g, 5 kg and 25 kg packs or ask for a bulk quotation. You receive a batch certificate of analysis and a 16-section SDS with each order. Request pricing online and we confirm availability, documentation and freight to your country.
Specifications and identifiers
| Product name | Phosphotungstic acid |
|---|---|
| Catalogue number | ZX-014041 |
| CAS number | 12501-23-4 |
| IUPAC name | phosphoric acid;dodecakis(trioxotungsten);hydrate |
| Molecular formula | H5O41PW12 |
| Molar mass | 2898.1 g/mol |
| Exact mass | 2897.2163 |
| Physical form | Crystalline |
| Appearance | White to yellow to beige to grey powder or crystals |
| H-bond donors / acceptors | 4 / 41 |
| Topological polar surface area | 693 Ų |
| HS code | 28111990 |
| UN number | UN 3260 |
| InChIKey | AVFBYUADVDVJQL-UHFFFAOYSA-N |
| SMILES | O.OP(=O)(O)O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O |
| PubChem CID | 16212977 |
| Synonyms | Tungstophosphoric acid, Phosphoric acid--trioxotungsten--water (1/12/1), Phosphotungstic acid hydrate, 12-Tungstophosphoric acid hydrate, Hydrogen phosphotungstate hydrate (H3PW12O40.xH2O), Phosphotungstic acid, AR, Phosphotungstic acid hydrate, reagent grade, Phosphotungstic acid hydrate, for microscopy, Phosphotungstic acid hydrate, p.a., 99.5%, Phosphotungstic acid hydrate, SAJ special grade, Hydrogenphosphotungstatehydrate(H3PW12O40.xH2O) |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H302Harmful if swallowed
- H314Causes severe skin burns and eye damage
- H318Causes serious eye damage
- H411Toxic to aquatic life with long lasting effects
Precautionary statements P260, P264, P264 + P265, P270, P273, P280, P301 + P317, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P321, P330, P363, P391, P405, P501
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 25 g | Quoted on request | |
| 100 g | Quoted on request | |
| 500 g | Quoted on request | |
| 5 kg | Quoted on request | |
| 25 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about Phosphotungstic acid
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