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12501-23-4 - 12-Tungstophosphate hydrate, Reagent Grade - 12-Phosphotungstic acid hydrate - 11827 - Alfa Aesar

11827 12-Tungstophosphate hydrate, Reagent Grade

CAS Number
12-Phosphotungstic acid hydrate

Size Price ($) Quantity Availability
50g 80.37
250g 251.70
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12-Tungstophosphate hydrate, Reagent Grade


Chemical Properties

Formula Weight
Melting point
Moisture & Light Sensitive
Soluble in water, dichloromethane, acetonitrile, acetic acid and ionic liquids.


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.


Hygroscopic. Store in a cool place. Incompatible with strong oxidizing agents and strong bases.

Literature References

Chang, Q.; Li, J.; Gu, D.; Yin, P.; Jiang, H.; Shen, L. Preparation, Characterization, and Conductivity of Polyaniline Doped with 12-Tungstoboric Acid. J. Macromol. Sci. Part B 2015, 54 (4), 381-392.

Zhang, D.; Zhang, Y.; Ma, H.; Yan, H.; Song, Y. Fabrication of a 12-tungstophosphate and cadmium oxide composite film and its properties. Mater. Chem. Phys. 2014, 144 (3), 369-376.

GHS Hazard and Precautionary Statements

Hazard Statements: H314-H318

Causes severe skin burns and eye damage. Causes serious eye damage.

Precautionary Statements: P260-P280-P303+P361+P353-P305+P351+P338-P301+P330+P331-P304+P340-P310-P363-P405-P501a

Do not breathe dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Immediately call a POISON CENTER or doctor/physician. Wash contaminated clothing before reuse. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

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