Description

Ammonium Phosphotungstate n-Hydrate is an inorganic heteropoly acid salt, a versatile precursor and catalyst in advanced materials synthesis. This compound is valued for its unique acidic and redox properties, making it an effective catalyst in organic synthesis and a key material for preparing functional tungsten-based oxides and thin films. It is primarily utilized by research institutions and industrial manufacturers in the chemical, materials science, and electronics sectors for catalyst development and specialized material fabrication.

Application

• Heterogeneous Catalysis: Serves as a solid acid catalyst or catalyst precursor for various organic reactions, including esterification, alkylation, and dehydration.
• Material Science Precursor: Used in the synthesis of tungsten oxide (WO3) films, phosphotungstic acid, and other functional tungsten-based materials for electrochromic devices and sensors.
• Analytical Chemistry: Employed as a reagent for the precipitation and gravimetric determination of alkaloids, certain proteins, and other biological molecules.
• Corrosion Inhibition: Acts as a component in formulations for creating protective coatings and corrosion inhibitors on metal surfaces.
• Photocatalysis Research: Investigated as a component in composite photocatalysts for environmental remediation and energy conversion applications.

Basic Information

Product Name	Ammonium Phosphotungstate n-Hydrate
CAS No.	12026-92-5
Molecular Formula	(NH4)3PW12O40·nH2O
Molecular Weight	Contact for details (Anhydrous: ~2951.14 g/mol)
Synonyms	Ammonium Phosphotungstate Hydrate; Ammonium 12-Tungstophosphate; Ammonium Tungstophosphate; Dodecatungstophosphoric Acid Ammonium Salt; Phosphotungstic Acid Ammonium Salt; Ammonium Phospho-12-Tungstate; PW12 Ammonium Salt; (NH4)3[PW12O40]
EINECS	234-719-8

Quality Control

Our Ammonium Phosphotungstate n-Hydrate is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency and high purity, meeting the specifications required for research and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product performance and stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (as PW12O403-)	≥ 98.0 %
Loss on Drying	Contact for details
Solubility (in Water)	Clear solution

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.