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Phosphotungstic acid hydrate

Product Name
Phosphotungstic acid hydrate
CAS No.
12501-23-4
Chemical Name
Phosphotungstic acid hydrate
Synonyms
PHOSPHOTUNGSTIC ACID;TUNGSTOPHOSPHORIC ACID;Phosphotungstic aci;heavy acid;stic acid hydrate;12-TUNGSTOPHOSPHATE;phosphowolframic acid;PhosphotungsticAcidGr;phosphotungstenic acid;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℃]
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
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
$182
Updated
2024/03/01
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
$645
Updated
2024/03/01
Sigma-Aldrich
Product number
1.00583
Product name
Tungstophosphoric acid hydrate
Purity
for analysis EMSURE?
Packaging
100g
Price
$331
Updated
2024/03/01
Sigma-Aldrich
Product number
1.00583
Product name
Tungstophosphoric acid hydrate
Purity
for analysis EMSURE?
Packaging
250g
Price
$662
Updated
2024/03/01
Sigma-Aldrich
Product number
1.00582
Product name
Tungstophosphoric acid hydrate
Purity
cryst. EMPLURA?
Packaging
100g
Price
$127
Updated
2024/03/01
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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

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