ChemicalBook > CAS DataBase List > Phosphotungstic acid hydrate

Phosphotungstic acid hydrate

Product Name: Phosphotungstic acid hydrate
CAS No.: 12501-23-4
Chemical Name: Phosphotungstic acid hydrate
Synonyms: TUNGSTOPHOSPHORIC ACID;Phosphotungstic aci;heavy acid;stic acid hydrate;12-TUNGSTOPHOSPHATE;phosphowolframic acid;PhosphotungsticAcidGr;phosphotungstenic acid;Odecamolybdophosphoric;12-TUNGSTOPHOSPHORICACID
CBNumber: CB6465748
Molecular Formula: H3O41PW12(-2)
Formula Weight: 2896.04
MOL File: 12501-23-4.mol

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Phosphotungstic acid hydrate Property

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
InChIKey: YLIQWAMEHLESGU-UHFFFAOYSA-L
CAS DataBase Reference: 12501-23-4(CAS DataBase Reference)

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Safety

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
Toxicity: LD50 orally in Rabbit: 3300 mg/kg

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H314Causes severe skin burns and eye damage

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 455970
Product name: Phosphotungstic acid hydrate
Purity: 99.995% trace metals basis (Purity excludes up to 300 ppm Si)
Packaging: 10g
Price: $178.6
Updated: 2025/07/31

Sigma-Aldrich

Product number: 455970
Product name: Phosphotungstic acid hydrate
Purity: 99.995% trace metals basis (Purity excludes up to 300 ppm Si)
Packaging: 50g
Price: $633.65
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1.00583
Product name: Tungstophosphoric acid hydrate
Purity: for analysis EMSURE?
Packaging: 100g
Price: $158
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1.00583
Product name: Tungstophosphoric acid hydrate
Purity: for analysis EMSURE?
Packaging: 250g
Price: $749
Updated: 2025/07/31

Sigma-Aldrich

Product number: 1.00582
Product name: Tungstophosphoric acid hydrate
Purity: cryst. EMPLURA?
Packaging: 100g
Price: $144
Updated: 2025/07/31

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Phosphotungstic acid hydrate Chemical Properties,Usage,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

1,1'-SPIROBIINDANE-7,7'-DIOL TEMPO

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View Lastest Price from Phosphotungstic acid hydrate manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD

Product: Phosphotungstic acid hydrate 12501-23-4
Price: US $0.00/KG
Min. Order: 1KG
Purity: 98%min
Supply Ability: 30tons/month
Release date: 2023-02-03

Career Henan Chemical Co

Product: Trioxotungsten - phosphoric acid hydrate (12:1:1) 12501-23-4
Price: US $1.00/kg
Min. Order: 1kg
Purity: 95%-99%
Supply Ability: 1000kg
Release date: 2018-12-25

12501-23-4, Phosphotungstic acid hydrateRelated Search:

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12-Tungstophosphoricacidhydrate,99+%

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Phosphotungstic acid hydrate 100GR

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phosphotungstenic acid

Phosphotungstic Acid xHydrate

Phosphotungstic acid hydrate, Histology stain for cell specimens

Tungstate(3-), tetracosa-μ-oxododecaoxo[[]μ12-[[]phosphato(3-)-[?]O:[?]O:[?]O:[?]O':[?]O':[?]O':[?]O'':[?]O'':[?]O'':[?]O''':[?]O''':[?]O''']]dodeca-, hydrogen, hydrate (1:3:[?])

Phosphotungstic acid hydrate,WO3 85%

Odecamolybdophosphoric

12501-23-4