Phosphotungstic acid hydrate
- CAS No.
- 12501-23-4
- Chemical Name:
- Phosphotungstic acid hydrate
- Synonyms
- TUNGSTOPHOSPHORIC ACID;DODECA-TUNGSTOPHOSPHORIC ACID HYDRATE;Phosphotungstic aci;heavy acid;stic acid hydrate;12-TUNGSTOPHOSPHATE;phosphowolframic acid;PhosphotungsticAcidGr;PHSOPHOTUNGUSTIC ACID;phosphotungstenic acid
- CBNumber:
- CB6465748
- Molecular Formula:
- H3O41PW12(-2)
- Molecular Weight:
- 2896.04
- MDL Number:
- MFCD00149915
- MOL File:
- 12501-23-4.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | ~95 °C(lit.) |
|---|---|
| Boiling point | 107.9℃[at 101 325 Pa] |
| Density | 3.88[at 20℃] |
| bulk density | 960kg/m3 |
| vapor pressure | 19.2hPa at 20℃ |
| storage temp. | room temp |
| form | Solid |
| color | White |
| PH | 1.3 (20g/l, H2O, 20℃) |
| Water Solubility | soluble |
| Sensitive | Hygroscopic |
| Exposure limits |
ACGIH: TWA 3 mg/m3 NIOSH: TWA 5 mg/m3; STEL 10 mg/m3 |
| Stability | hygroscopic |
| InChI | 1S/H3O4P.H2O.36O.12W/c1-5(2,3)4;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;/h(H3,1,2,3,4);1H2;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| InChIKey | YLIQWAMEHLESGU-UHFFFAOYSA-L |
| SMILES | 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.OP(O)(O)=O |
| CAS DataBase Reference | 12501-23-4(CAS DataBase Reference) |
| UNSPSC Code | 12352302 |
| NACRES | NA.23 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS05,GHS07,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H302-H314-H411 | |||||||||
| Precautionary statements | P260-P273-P280-P301+P312-P303+P361+P353-P305+P351+P338 | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges | |||||||||
| Hazard Codes | C,Xi | |||||||||
| Risk Statements | 34-36/37/38 | |||||||||
| Safety Statements | 26-36/37/39-45-24/25-37/39-36 | |||||||||
| RIDADR | UN 3260 8/PG 3 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | TH5650000 | |||||||||
| F | 3-10-23 | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 2811 19 80 | |||||||||
| HazardClass | 8 | |||||||||
| Storage Class | 8B - Non-combustible corrosive hazardous materials | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral Aquatic Chronic 2 Eye Dam. 1 Skin Corr. 1C |
|||||||||
| Toxicity | LD50 orally in Rabbit: 3300 mg/kg | |||||||||
| REACH Registrations | Active | |||||||||
| Limited Quantities | 5.0 kg (11 lbs) (solid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
Phosphotungstic acid hydrate price More Price(45)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 455970 | Phosphotungstic acid hydrate 99.995% trace metals basis (Purity excludes up to 300 ppm Si) | 12501-23-4 | 10g | $200 | 2026-04-30 | Buy |
| Sigma-Aldrich | 455970 | Phosphotungstic acid hydrate 99.995% trace metals basis (Purity excludes up to 300 ppm Si) | 12501-23-4 | 50g | $710 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.00583 | Tungstophosphoric acid hydrate for analysis EMSURE? | 12501-23-4 | 100g | $166 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.00583 | Tungstophosphoric acid hydrate for analysis EMSURE? | 12501-23-4 | 250g | $788 | 2026-04-30 | Buy |
| Sigma-Aldrich | 1.00582 | Tungstophosphoric acid hydrate cryst. EMPLURA? | 12501-23-4 | 100g | $151 | 2026-04-30 | Buy |
Phosphotungstic acid hydrate Chemical Properties,Uses,Production
Chemical Properties
Crystalline
Uses
Phosphotungstic acid hydrate has been a useful histology stain for cell specimens.
Uses
12-Tungstophosphate hydrate is used in histology as a component for staining of cell specimens. It binds to fibrin, collagen and fibers of connective tissues. It is also used to replace the anions of dyes from these materials. In solution, it acts as a homogeneous catalyst and involved in the hydrolysis of propene to give 2-propanol. It is supported with alumina and silica and act as a heterogeneous catalyst involved in the dehydration of 2-propanol to propene and methanol to hydrocarbons. In analytical chemistry, it is used to precipitate proteins and termed as "universal" precipitant for polar proteins.
Uses
Phosphotungstic acid hydrate may be used as a staining agent for the transmission electron microscope (TEM) imaging of cetyltrimethylammonium bromide (CTAB) coated gold nanorods.
It may be used in the preparation of:
- Phosphotungstic acid doped ormosil hybrid networks.
- Niobia supported phosphotungstic acid (PTA) catalysts.
- Titanium dioxide (TiO2) nanoparticles /phosphotungstic acid (HPW) films.
General Description
Phosphotungstic acid hydrate is a heteropolyacid.
Flammability and Explosibility
Not classified
Purification Methods
A few drops of conc HNO3 are added to 100g of phosphotungstic acid dissolved in 75mL of water, in a separating funnel, and the solution is extracted with diethyl ether. The lowest of the three layers, which contains a phosphotungstic acid-ether complex, is separated, washed several times with 2M HCl, then with water and again extracted with ether. Evaporation of the ether under vacuum with mild heating on a water bath gives crystals which are dried under vacuum and ground [Matijevic & Kerker, J Am Chem Soc 81 1307 1959].
Phosphotungstic acid hydrate Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Aladdin Bio-Chem Technology Co.,LTD | 400-6206333 13167063860 | anhua.mao@aladdin-e.com | China | 29985 | 65 |
| NORANA GROUP | 027-59209883 17386138556 | service@nornachem.com | China | 4874 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| JinYan Chemicals(ShangHai) Co.,Ltd. | 13817811078 | sales@jingyan-chemical.com | China | 9963 | 60 |
| Shanghai Hanhong Scientific Co.,Ltd. | 021-54306202 13764082696 | info@hanhongsci.com | China | 42917 | 64 |
| Shandong Xiya Chemical Co., Ltd | 13355009207 13355009207 | 3007715519@qq.com | China | 18722 | 57 |
View Lastest Price from Phosphotungstic acid hydrate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-11 | Phosphotungstic Acid Hydrate
12501-23-4
|
100kg | 99.0% | 5000 kg | Gansu Jinyuantai New Material Co., Ltd. | ||
 |
2026-09-11 | Phosphotungstic Acid Hydrate (PTA)
12501-23-4
|
100kg | ≥ 99.0% | 5000 kg | Anhui Royal Chemical Co., Ltd. | ||
 |
2026-09-11 | Phosphotungstic acid hydrate
12501-23-4
|
1KG | 98%min | 30tons/month | WUHAN FORTUNA CHEMICAL CO., LTD |
-
- Phosphotungstic Acid Hydrate
12501-23-4
- $0.00
- 99.0%
- Gansu Jinyuantai New Material Co., Ltd.
-
- Phosphotungstic Acid Hydrate (PTA)
12501-23-4
- $0.00
- ≥ 99.0%
- Anhui Royal Chemical Co., Ltd.
-
- Phosphotungstic acid hydrate
12501-23-4
- $0.00
- 98%min
- WUHAN FORTUNA CHEMICAL CO., LTD
